Diag 2 code freightliner

Jul 02, 2024
3ALACWDT1GDHL8580 Have code: SPN: 4364. FMI: 31 Hello!!! I'm still waiting. Technician: Joe Green. Okay, this code indicates an issue with the SCR system. It's the system after the DPF that uses DEF to clean NOx emissions. There are a lot of different causes for this code such as EGR issues, exhaust leaks, exhaust leaks, NOx sensors, failed ....

The codes are Cab249, SID 254, Fail 04 and the other is ECU 128, SID 277, Fail 01. Technician: go-west.. THE 277 IS YOUR Delta p sensor has a fault. The 249,254 code means the sam module has a internal ecu fault and needs to be reflashed.. Ask Your Own Medium and Heavy Trucks Question.I have a 545-146 fault code failure 12xs, Frieghtliner Columbia.. Don't serial number handy it's a mbe 4000 engine, So - Answered by a verified Technician ... Have a 2010 Freightliner Columbia has an abs code 545 and 146 laptop will not detect abs to check code ... ECU 128 Fault 1 Fault 2 SID 001 SID 054545-146 545-126 Diag 2Vin # 1FUJA ...1 answer. 2012 freightliner cascadia engine code ECU 1. What does this mean. Ecu 1 fault means the engine EMC has a internal fault and needs to be replaced. Most of the time with this code It's not the ecm itself it's usually a wiring problem going to ECM. Their should be two fuses for ECM either next to ECM in plastic covers or by starter or ...CODES: Fault Code: 195 PID(P), SID(S): P111 SPN: 111 FMI: 3/3 Lamp: AMBER SRT: REASON: Coolant Level Sensor 1 Circuit - Voltage Above Normal or Shorted to High Source. High signal voltage detected at engine coolant level circuit. ... This diagnostic runs continuously when the keyswitch is in the ON position, or when the …Feb 26, 2020 · 2011 freightliner 6.7 Cummins many codes bh33 6997 eng o 3251 bh 33 6918 … read more. I have a code on my Freightliner M2 106. TxId: 0 SPN: 27 –. TxId: 0 SPN: 27 – Engine Exhaust Gas Recirculation 1 Valve Position FMI: 4 (Voltage Below Normal) Count: 126 TxId: 0 SPN: 1569 – Engine … read more. This code is for the intake manifold pressure sensor. Check the connector for any damage. Roy. 272.2 SPN 1636/FMI 2 - EPA10 - GHG14. Engine Air Temperature - Plausibility Fault Out of Range (Low Box) SPN 1636/FMI 2. DescriptionEngine Air Temperature - Plausibility Fault Out of Range (Low Box)Oil was low we put a container of oil in the engine. SFU 49 is the other fault code we are getting. Answered in 36 minutes by: Technician: go-west.. go-west.. Category: Satisfied Customers: 1,266. Verified. Ask Your Own Medium and Heavy Trucks Question.09 freightliner m2 no start. get a fault code BH 164. will this cause a no start? 2009 Freightliner M2 cummins 8.2. - Answered by a verified Technician. We use cookies to give you the best possible experience on our website. ... ECU 128 / BH 164 / SID 082 / Fail 06 / Faule 2 / Diag 2 / Faule 2 ...Electrical System General Information. The Saf-T-Liner C2 uses an electrical system where multiple electrical signals are carried along a simplified set of wires, reducing the size of wiring bundles. There are significantly fewer wires overall, meaning less chance of damage, shorts, and other problems. The information in this chapter is to help ...The Freightliner Argosy Fault Codes List is a valuable resource for technicians and mechanics working with Freightliner Argosy trucks. It provides a detailed compilation of fault codes specific to the Argosy model, assisting in accurate diagnosis, troubleshooting, and resolving issues efficiently while prioritizing safety precautions.BUSINESS CLASS M2 MAINTENANCE MANUAL Models: M2 100 M2 106 M2 106V M2 112 M2 112V STI-455-7 (02/03/2022) Published by Daimler Truck North America LLC 4747 N. Channel Ave.HD110 truck code scanner is compact and easy to carry or store, with size 6.65 x 2.95 x 2.24in, It can be thrown into a glove box or center console 🥇[Full OBD2 Functions] HD110 truck scan tool supports 10 full obd2 function include read/clear code, read live data,on-board monitor test, I/M readiness, driving test and more for vehicles after ...To clear Freightliner truck fault codes, connect the diagnostic and software tool to the truck’s OBD port and hit the reset function. Some Freightliner fault codes can be …Protocols for a J1587 and J1939 fault code. Repair-Connect.net uses several different diagnostic protocols as defined by Society of Automotive Engineers (SAE). In this blog post, we’ll look at the older J1587 protocol and its replacement, the J1939 diagnostic protocols used on today’s commercial vehicles. SAE originally developed the J1587 …GHG14 This is an updated section with new diagnostics including turbocharger wastegate. SPN 102/FMI 18 - GHG14 01 05-15 All information subject to change without notice. 3 ... 2. Check for other codes. Are any other fault codes present? a. Yes; repair those faults first. b. No; Go to step 3. 3. Check the Motor Control Module (MCM) software level.code eec 61 on a freightliner mean A check engine light and fault 61 code is an electrical failure to the injector or a bad solenoid on the injector, but you ...Section 43.3 Troubleshooting Flash Code 39, SID 146, 147/FMI 2, 12, 7, 14, 11. The following procedure will troubleshoot Flash Code 39. ‪ Section 43.3.116 active Dashlane promo codes and offers available. Save 50% on secure password manager with a Dashlane coupon this May. PCWorld’s coupon section is created with close supervision...Detroit DiagnosticLink Standard. The standard edition provides ECU information, diagnostic fault codes, instrumentation and run system tests, and edit ECU parameters. ECUs are supported for the following products: EPA07 – DD15, DD13, DD16, S60, MBE900, MBE4000. EPA10 – DD13, DD15, DD16.2012 Freightliner M2 Business Chassis on Jayco Seneca motor home will not start. After key ON maintenance code bh 33 and no eng are displayed. bh 33 goes to diag 2 then 639. No eng also goes to. Diag … read more1 08 05-18 SUBJECT DATE SPN 521049 (TCM) August 2018 Additions, Revisions, or Updates Publication Number / Title Platform Section Title Change DDC-SVC-MAN-0140 DT12 SPN 521049/FMI 7 This is a new procedure.GHG14 This is an updated section with new diagnostics including turbocharger wastegate. SPN 102/FMI 18 - GHG14 01 05-15 All information subject to change without notice. 3 ... 2. Check for other codes. Are any other fault codes present? a. Yes; repair those faults first. b. No; Go to step 3. 3. Check the Motor Control Module (MCM) software level.P0446 - Multiple Displacement System Rationality Bank 2. P0420 - Catalyst System Efficiency Below Threshold Bank 1. P0171 - System Too Lean Bank 1. P0300 - Cylinder Misfire Detected Random Cylinders. A full guide of what OBD2 codes are, how to read diagnostic trouble codes (DTC's), and a full list of DTC codes you can search from.2 SPN 521049/FMI 31 - GHG17 DEF Inducement DEF Lamp Active Table 1. SPN 521049/FMI 31 Description This Code Sets When There is a Code Present for the Diesel Exhaust Fluid (DEF) Tank Level, DEF Dosing Unit, DEF Pump, NOx Sensors, Blocked DEF Line, DEF Quality, NOx Efficiency, Selective Catalyst Reduction (SCR) Harness and/or SCR Sensor.We are having an eng 1 fault code on a 2013 freightliner both check engine lights are on one red one blinking and the - Answered by a verified Technician. ... Sfu 49 Diag 2 and no eng fault code I had to replace a battery 2012 Freightliner Cascadia ...What is SPN 2631 FMI 1. In simple terms, you have low airflow in your engine somewhere. This problem may be due to a leak or a blockage somewhere in your air intake system. The two places to check first will be the air filter and the air inlet pipe to the turbocharger. If the air filter is dirty, you either need to use high-pressure air to ...a. Yes; repair other fault codes first. b. No; Go to step 2. 2 SPN 3227/FMI 2 - GHG17.Ecu 1 fault on 2013 freigthliner whit detroit motor what that…. Ecu 1 fault means the engine ecm has a internal fault and needs to be replaced. Most of the time with this code It's not the ecm itself it's usually a wiring problem going to ecm. Their should be two fuses for ecm either next to ecm in plastic covers or by starter or in battery box.2008 freightliner m2 with cummins isc. Code ecu 128 sid 232 fail 04. It comes on intermittently while driving and causes the Allison transmission to act up ... Check engine light on - codes on dash - ECU 128 diag 2 & bH164 diag 2 - What do these codes mean and how do we get C ...This spn fmi codes help explain the underlying meaning of the numerical components which build an engine fault code. - This is not a comprehensive list, or an alternative to the standard fault diagnostic process and only serves as a supplemental reference. - For a complete reference see SAE documentation regarding Serial Control and CommunicationsLAUNCH CR-HD Plus Heavy Duty Truck Scanner Diagnostic Full System Scan Tool Fit for Cummins, Caterpillar, International, Volvo, Detroit, Isuzu, Fuso, Diesel Truck & Car 2-in-1 OBD2 Code Reader 4.1 out of 5 stars 1,0965868 is cummins code for 4339-7 which means Aftertreatment 1 SCR Feedback Control Status - Mechanical System Not Responding or Out of Adjustment. we need to deal firstly with 5655 which is Aftertreatment 1 SCR Conversion Efficiency - Condition Exists. The reason for this fault is NOx conversion across the SCR catalyst is …a. Yes; diagnose the other fault codes first. b. No; Go to step 6. 6. Are there any other NOx sensor fault codes present? a. Yes; diagnose the other fault codes first. b. No; Go to step 7. 7. Are there any fault codes for the DEF metering unit, DEF pump, or DEF air valve present? a. Yes; diagnose the other fault codes first. b. No; Go to step 8. 8.Section 43.3 Troubleshooting Flash Code 39, SID 146, 147/FMI 2, 12, 7, 14, 11. The following procedure will troubleshoot Flash Code 39. ‪ Section 43.3.1 BUSINESS CLASS M2 MAINTENANCE MANUAL Models: M2 100 M2 106 M2 106V M2 112 M2 112V STI-455-7 (02/03/2022) Published by Daimler Truck North America LLC 4747 N. Channel Ave. I have 3 unknown diagnostics codes. 2017 freightliner cascadia. Dd15. 520363, 523530, 524011, after treatment 1 intake - Answered by a verified Technician2 SPN 521049/FMI 31 - GHG17 DEF Inducement DEF Lamp Active Table 1. SPN 521049/FMI 31 Description This Code Sets When There is a Code Present for the Diesel Exhaust Fluid (DEF) Tank Level, DEF Dosing Unit, DEF Pump, NOx Sensors, Blocked DEF Line, DEF Quality, NOx Efficiency, Selective Catalyst Reduction (SCR) Harness and/or SCR Sensor.Aug 28, 2016 · Posts: 1. DEF Level sensor code 1669. I have a 2011 Phaeton 40QBH and we are stuck here in a Cummins repair facility Olympia WA with the amber and red engine lights on. The code says the DEF level sensor is faulty or the wiring is shorted. The techs here have replaced the sensor but the fault remains. The 5V fuse is blowing and we are unable to ... GHG14 ACM2.1 Fault Codes SPN FMI ACM2.1 FAULT CODE DESCRIPTION GHG14 3609 4 DOC Inlet Pressure Circuit Failed Low 3610 2 DPF Outlet Pressure Sensor - Not Plausible 3610 3 DPF Outlet Pressure Circuit Failed High 3610 4 DPF Outlet Pressure Circuit Failed Low 3711 31 Parked Regen Failed - DOC Temp In Low Preventing Dosing 2. Go to the "Tools" menu and select the "Communication" tab. 3. Select the appropriate communication device for J1587 and J1939. 4. Select "Connect" on the main page. 5. Select the "View Fault Codes" tab. Note: Initial use requires all steps; however subsequent uses require only Step 4 and Step 5.Fault code 1 Fail 31 Spn1569 2015 Cascadia Cummins engine. spn 1569 relates engine protection torque derate -condition exists. critical fault codes related to engine operation are active. code 1 means urgent attention. A sort of limp mode setting that requires immediate attention by a cummins service center to prevent further damage to the engine.FMI: 2 INACTIVE FAULT CODES (0) Monday, May 13, 2019 2:05 PM Page 1 DIAGNOSTIC REPORT VIN: 1FUJGLDR4ALAS3397 Model Year: 2010 Manufacturer: Freightliner. COMPONENT FAULT CODES 8 TOTAL / 1 ACTIVE / 7 INACTIVE None RETARDER - ENGINE - J1939 ACTIVE FAULT CODES (0) ECM Serial Number:2011 Freightliner Cascadia fault code spn 2631 fmi 1 followed the diag tree on this one several times code keeps returning smoke control is at 1.0000 when pulling. Unit has 449,000 miles on it pulled venturi and hot pipe to EGR cooler very sooted up my question is would a egr cooler keep making this code return.Nick B. January 20, 2021. On the Mercedes Freightliner Sprinter engine, ECU 128 is not a fault code; it just refers You to the electronic control unit, where Your fault code will lie. The ECU is Your van's black box of electronics, so You've got something going on in there; 128 just points to module 128, but doesn't tell You anything about what ...2012 Freightliner M2 Business Chassis on Jayco Seneca motor home will not start. After key ON maintenance code bh 33 and no eng are displayed. bh 33 goes to diag 2 then 639. No eng also goes to. Diag … read moreJun 10, 2015 · This diagnostic code is typically Regulatory Fault Ignored - Derate On. Note: (EPA10 ONLY) If SPN 5246/FMI 0, 15 or 16 are the only fault(s) present, follow troubleshooting procedure for SPN 3361/FMI 7 (DEF Unit - Unable to clear Restriction). Service Diagnostics & Tools is your single point of reference for diagnostic tools, parts, and applications. DiagnosticLink help service technicians diagnose and service Freightliner products and Detroit engines. DDDL (Detroit Diesel Diagnostic Link) is the diagnostic tool supporting Detroit legacy engines.If there is not, then it indicates you may have a fault in the trailer light system itself.. It is a voltage code. 4 and 5 are the same. Roy. The code is actually CHS 71 for the chassis code and the SPN 520918 means there is an issue with the tail lights on the trailer. The FMI 4 or fail for is voltage below normal.Code EEC (1) Engine2 (2) SPN 3719 FMI 0 been Regen for 3hrd. Freightliner 09/14 cascadia evolution I think it Detroit - Answered by a verified Technician ... My 2010 Freightliner Cascadia has 2 fault codes. One is the 128S 155 00 which I understand to be the regen code. ... Means. 3AFOE4. a detrit drumroll engineering diagnostic tool was used ...Freightliner codes are obtained through diesel engine parts sites, such as DieselServiceParts.com. The site provides a long listing of codes that enable truckers and mechanics to d...I have a 2014 Freightliner CascadiaVin 3akjgld58gshg2410I have had the following codes appearEEC 61 diag 2 -43906 fault 1EEC 61 spn 4357 fail 5 fault 1EEC 61 spn 5488 fail 5 fault 2. Show More. Show Less. ... Vin is 1fvacwfb1jhjp2326. 2017 freightliner. Codes are spn 5443 fmi 0 and spn 4357 spn 5. Truck is in derate.Download on Apple iOS: http://ow.ly/VlLO50CO7b7 Download on Android: http://ow.ly/sxlv50CNwZbShop now: http://ow.ly/HutB50C2yCXLearn More: https://otrperfor...2 SPN 521049/FMI 31 - GHG17 DEF Inducement DEF Lamp Active Table 1. SPN 521049/FMI 31 Description This Code Sets When There is a Code Present for the Diesel Exhaust Fluid (DEF) Tank Level, DEF Dosing Unit, DEF Pump, NOx Sensors, Blocked DEF Line, DEF Quality, NOx Efficiency, Selective Catalyst Reduction (SCR) Harness and/or SCR Sensor.Jan 5, 2022 ... Code 1636 is super common. You might have other codes, but if you have 1636 then it is most likely the source of the problem for all those ...leaks. See Fig. 2. Make sure the engine is off and note the existing reading on the indicator. Resetthe indicator by pushing it down. See Fig. 2. Startthe engine and takeashorttest drive. Check the indica− tor again and note the level of restriction on the indi− cator, verifying it is atthe samelevel asseen earlier.The 11 is posted below. Looks like coolant level is low or the sensor is bad in the surge tank. Roy. 78.1 SPN 111/FMI 19 - EPA10 - GHG14. Coolant Level Low. SPN 111/FMI 19. DescriptionCoolant level below normal range. Monitored ParameterCoolant Level. Typical Enabling ConditionsAlways on.List of Freightliner Codes P1000 – P1099 (Fuel and Air Metering and Auxiliary Emissions Control) Trouble Code. Fault Location. Probable Cause. P1000. Ignition coil, 5 -primary circuit range/performance. Wiring, connectors, ignition coil 5, ECM. P1001.The common mechanical problems in a Freightliner M2 include faulty transmission, steering, and AC components. Common Freightliner M2 electrical problems include a defective blower motor, heater, engine fan, horn, power-take-off (PTO), bulkhead module, instrument cluster, and cruise control.Spn 3238 fmi 2 1/5. 2017 freightliner. Freightliner 2017 cascadia did 15. Yea. That code pops up with the engine light - Answered by a verified Technician ... That's it the code is spn 3238 fmi 2 sa 61 acm 1/4. Submitted: 4 years ago. Category: Medium and Heavy Trucks. Show More. Show Less. Ask Your Own Medium and Heavy Trucks Question. Share ...09 freightliner m2 no start. get a fault code BH 164. will this cause a no start? 2009 Freightliner M2 cummins 8.2. - Answered by a verified Technician. We use cookies to give you the best possible experience on our website. ... ECU 128 / BH 164 / SID 082 / Fail 06 / Faule 2 / Diag 2 / Faule 2 ... 5 faults: 1 = ecu 128 sid 231 fail 13. 2009 cascadia. other faults: 2 = cab 249 sid 254 fail 04; 3 = chs 216 sid 254 fail 04; 4 = sfu 164 sid 254 fail 14; 5 = 545 146 sid 254 fail 05 … read more. Mike Mcmillan. Triage Tech/Shop Foreman. CTP 3G Sundown panel to set Wi-Fi parameters on the CTP01T. EMG (E-mobility Group) panels for electrified trucks: DC charging panel. High voltage interlock loop panel. Tilt Sensor and Unlock panel. Battery management panel. eTransmission Diagnostics panel. Inverter Resolver Learn panel. Decommissioning panel.9 Engine Starting, Operation, and Shutdown. 10 Optional Engine Systems. 11 Emissions Reduction Components. 12 Brake System. 13 Steering System. 14 Manual Transmissions and Clutch. 15 Automated Transmissions. 16 Drive Axle Feature Operation. 17 Fifth Wheels.Jun 10, 2015 · This diagnostic code is typically Regulatory Fault Ignored - Derate On. Note: (EPA10 ONLY) If SPN 5246/FMI 0, 15 or 16 are the only fault(s) present, follow troubleshooting procedure for SPN 3361/FMI 7 (DEF Unit - Unable to clear Restriction). SOURCE: 2012 freightliner cascadia DD15 fault code ECU 1... prior to the fault code the engine bogged down really bad and solid yellow and check engine light come on. an answer from just answers reports this. ecu 1 fault means the engine ECM has an internal fault and needs to be replaced. most of the time with this code it is not the ECM itself ...When you choose Freightliner, you are getting access to over 700 total service locations and the reliability of your dedicated support staff. Advanced Manufacturing. Long before any Freightliner is assembled on the production line, our engineering team designs and builds digital mock-ups of every truck model.The 522116 is for the ambient temp sensor. It is behind the front bumper on the right side. It has a 2 wire connector. Very common failure. I will check on the other code. Roy. OK, the 5246 is a warning of derate as well. This is most likely due to the other code. Some further information on the 522 code.27.2.4 146 07 - EGR Valve not Responding Perform the following steps to resolve an EGR valve not responding: 1. Check active codes. [a] If fault codes 146 07 and 146 02 are both active, refer to section 27.2.3. [b] If fault code 146 07 is the only code active, check for lost continuity between the PLD-MR and the EGR valve (PV2). Refer to ...need to verify that the DEF is not frozen before troubleshooting this fault code. 1. Connect DiagnosticLink ®. 2. Turn the ignition ON (key ON, engine OFF). 3. Check for multiple codes. Are codes SPN 4334/FMI 3, 4, SPN 4375/FMI 3, 4, or SPN 3361/FMI 3, 4, 5 also present? a. Yes; diagnose and repair the other fault codes first. Verify repair. b.Common Freightliner fault codes include P0101, P0335, P0720, P1214, P1482, and P1682. These codes indicate issues with the engine, transmission, and emissions system. It’s …Thank you for coming to Just Answer. Your Question is as important to us as it is to you. I am sorry to hear you are having this issue. I go offline between 3-4 Pm CST. M-F. Weekend 2-3 pm CST for the day. SPN 102 FMI 18 CM2350. Intake manifold pressure is below the minimum operating limit.Choose one of the 2021 Freightliner models below to find applicable TSBs: 108sd. 114sd. 122sd. Business Class M2. Cascadia. Coronado. NOTE: This information is presented for information purposes only. It is not intended as repair advice and we are not responsible for any actions you take on any vehicle.Freightliner Forum > Code eec 61 freigtliner cascadia 2012 ... This diagnostic code is typically Regulatory Fault Ignored - Derate On. Note: (EPA10 ONLY) If SPN 5246/FMI 0, 15 or 16 are the only fault(s) present, follow troubleshooting procedure for SPN 3361/FMI 7 (DEF Unit - Unable to clear Restriction). ...

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That SOURCE: 2014 freightliner cascadia, dd13 showing an active code mil light Diag, says ecu 01 , what can that be. the code dd13 for a detroit series 60 refers to coolant level sensor ---input voltage low should be in the radiator top tank and energizers when the coolant level in the cooling system falls below a set point in the radiator

How Make sure definitely tank is at least 1/2 to full.The other code 639 indicates a loss of communication between the ecu and other modules. So check the power fuses in the battery box. ... Sfu 49 Diag 2 and no eng fault code I had to replace a battery 2012 Freightliner Cascadia ... I have a Cascadia freightliner 2010 dd15 fault code eng high ...The best OBD2 scanner in 2024 is the BlueDriver Bluetooth Pro. The TOPDON ArtiDiag800BT, Foxwell NT201, Motopower MP69033, Innova CarScan Advisor 5110, Launch CRP129E Scan Tool, Autel MaxiCOM ...

When Ever wonder why some airports have unusual airport codes? Here's a look at some of the more unique IATA codes and more about how they came to be. Most International Air Transport A...Flash codes beginning with 2 are faults from the CPC. Flash Code MCM Fault Description 1111 EGR Valve Position Circuit Failed Low 1111 EGR Valve Position Circuit Failed High 1111 EGR Valve Position Feedback Failed 1111 EGR Valve Position Feedback Failed (High Box) 1111 EGR Valve Position Feedback Failed (Low Box) ...…

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forensic files vicky lyons Eec 61 diag 2. Truck won't start. Engine light on as well. Eec 61 diag 2. Truck won't start. Engine light on as well. ... 2016 freightliner cascadia. 4 codes popped up while mil ligth yellow check engine and def light blinking. eec 61 3364 fail 2 eec 61 4364 fail 18 eec61 5246 fail 15 eec 61 5246 fail 16 Did a parked reg ... oregon health plan income limits 2024cheryl johnston obituary 2014 freightliner M2 with cummins 6.7. Code 2003 fmi 19. Trans CAN message missing. ... I have a 2013 freightliner M-2 that wont start. trans key pad flashing . and dash saying no trans sid 2003 fmi 19 sid 191 fmi 9 … knox county tn jail inmate searchemissions on erdman avenuela car show discount tickets 2 SPN 521049/FMI 31 - GHG17 DEF Inducement DEF Lamp Active Table 1. SPN 521049/FMI 31 Description This Code Sets When There is a Code Present for the Diesel Exhaust Fluid (DEF) Tank Level, DEF Dosing Unit, DEF Pump, NOx Sensors, Blocked DEF Line, DEF Quality, NOx Efficiency, Selective Catalyst Reduction (SCR) Harness and/or SCR Sensor. t mobile go5g vs magenta 2014 freightliner M2 with cummins 6.7. Code 2003 fmi 19. Trans CAN message missing. ... I have a 2013 freightliner M-2 that wont start. trans key pad flashing . and dash saying no trans sid 2003 fmi 19 sid 191 fmi 9 … why is sean larkin not on on patrol liveprincess house crystal hurricane candle holderstaino petroglyphs meanings '11 cascadia code chs 71 spn 520409 fail 04 Discussion in 'Trucks [ Eighteen Wheelers ]' started by marcusthegreat, Jul 29, 2016. Page 1 of 2 1 2 ... left turn signal blinks fast on tractor but won't send to trailer; I told freightliner the code but they want me to bring in but suggested it could be the flasher within the body control computer?