Engine Retarder Selection Signal Missing, 1 Missing Engine Ret

Engine Retarder Selection Signal Missing, 1 Missing Engine Retarder Selection Signal Check Check as follows:‪ 231. Jun 10, 2019 · Series 60 DDEC VI Troubleshooting - Section 79 SPN 973 (CPC) - J1939 Ebc1 Message Missing and Engine Retarder Selection Signal Is Erratic or Misssing The J1939 SPN986 code indicates a fault in the engine retarder selection signal, often linked to wiring or sensor issues on the DD15 engine. Code 973 FMI 13 indicates the engine retarder selection signal is missing, often due to faulty dash switches or multiplex wiring issues. If you don't take the time to look into Spn 973 Fmi 13 engine problem when it arises, it can add up quickly. For more detailed diagnostics — including step-by-step repair instructions, wiring diagrams, parts lookup, and labor guides — visit Diesel Repair, your trusted source for diesel engine troubleshooting and service data. Check the retarder control module connections and wiring harness for damage or corrosion. Spn 973 Fmi 13 problem code is about J1939 Engine Retarder Selection Signal Missing Or Not Available = Sna (signal Not Available). Sep 21, 2025 · Detroit DD13 GHG14 (2014-16) Fault Code: SPN 973 FMI 13 (CPC) Engine Retarder Selection Signal is Missing NOTE: Please see the step by step troubleshooting procedures for this specific code. Has the CPC been recently reprogrammed? GHG14 ACM2. 1. Begin by inspecting the engine control module (ECM) connections for corrosion or loose wiring. 2 SPN 973/FMI 13 - EPA07 - EPA10 - GHG14 Engine Retarder Selection Signal is Missing Check for multiple codes: Jun 8, 2019 · This fault is typically the engine retarder selection signal is missing. 1 Fault Codes Circuit Fault Rationality Fault Engine Protection Fault Component Broadcasted Fault Communication Data Fault Information Fault Detroit DD13 EPA07 (2007-09) Fault Code: SPN 973 FMI 13 (CPC) Engine Retarder Selection Signal is Missing NOTE: Please see the step by step troubleshooting procedures for this specific code. SPN 3696 relates to Diesel Particulate Filter (DPF) regeneration control issues, possibly from faulty sensors or MUX switch errors. 2. SPN 973 indicates a missing engine retarder selection signal, often due to wiring or switch faults. 3 SPN 973/FMI 19 EPA07 Series 60 DDEC VI Troubleshooting Guide - 6SE567 Generated on 10-13-2008 SPN 973 indicates a missing engine retarder selection signal, often due to wiring or switch faults. NOTE: If ECM has been programmed recentely, check programming to ensure it is correct. Once this is done, follow the appropriate module communication troubleshooting procedures for the affected module. Since the multiplex system controls these signals, check the multiplex module and related fuses for faults. [b] If MCM SPN 625/FMI 9 is present, troubleshoot and repair the CAN line. Start by inspecting the retarder control switch and its wiring harness for damage or corrosion. 79. NOTE: If ECM has been programmed recently, check programming to ensure it is correct. Feb 25, 2025 · Below is a full list of fault codes for the Detroit Diesel DD13 covering model years 2014–2016. Helpful when troubleshooting electrical faults. Detroit DD13 EPA10 (2010-13) Fault Code: SPN 973 FMI 13 (CPC) Engine Retarder Selection Signal is Missing NOTE: Please see the step by step troubleshooting procedures for this specific code. If you found this page helpful please share. Oct 15, 2025 · Detroit DD15 EPA07 (2007-09) Fault Code: SPN 973 FMI 19 (CPC) Engine Retarder Selection Signal is Erratic NOTE: Please see the step by step troubleshooting procedures for this specific code. ‪ Check as follows:‪ Check for multiple codes: If CPC SPN 168/FMI 0/14/18 (Battery Voltage) are present troubleshoot these first. Start by inspecting the retarder switch and its connectors on the dash for damage or corrosion. Jun 10, 2019 · Missing Engine Retarder Selection Signal Check Check as follows:‪ Check for multiple codes: If CPC SPN 168/FMI 0/14/18 (Battery Voltage) are present troubleshoot these first. 2 SPN 973/FMI 13 79. 3 SPN 973/FMI 19 EPA07 Series 60 DDEC VI Troubleshooting Guide - 6SE567 Generated on 10-13-2008 The J1939 SPN986 code indicates a fault in the engine retarder selection signal, often linked to wiring or sensor issues on the DD15 engine. Oct 13, 2008 · This fault is typically the engine retarder selection signal is missing. If only a “J1939 Error” fault is present, go to step 2 . [c] Detroit DD15 EPA10 (2010-13) Fault Code: SPN 973 FMI 13 (CPC) Engine Retarder Selection Signal is Missing NOTE: Please see the step by step troubleshooting procedures for this specific code. Transmission Output Shaft Speed Transmission Output Shaft Speed Ambient Air Combi Sensor, Part Humidity Ambient Air Combi Sensor, Part Humidity Transmission Current Gear Transmission Current Gear Transmission Selected Gear Transmission Selected Gear Accelerator Pedal Idle Switch (GAS1 + GAS2 or J1939) Accelerator Pedal Idle Switch (GAS1 + GAS2 or J1939) Accelerator Pedal Idle Switch (GAS1 Here is a complete list of some of the most commonly encountered Mercedes Benz fault codes. 1 Missing EBC1 Transmission from ABS Check Check as follows: 1. ‪ Check as follows:‪ Jun 8, 2019 · Once this is done, follow the appropriate module communication troubleshooting procedures for the affected module. Oct 10, 2020 · This fault is typically the J1939 EBC1 message from the transmission is missing. View and Download Detroit Diesel Engine 60 DDEC VI instruction manual online. Oct 7, 2023 · This fault is typically the engine retarder selection signal is erratic. NOTE: If codes 168-0, 168-14, or 168-18 active fix those first. Email This Page Section 79 SPN 973 (CPC) - J1939 Ebc1 Message Missing and Engine Retarder Selection Signal Is Erratic or Misssing 79. . The Fail 13 SPN 973 ENG 0 code typically indicates an engine sensor or communication fault. Oct 15, 2025 · Detroit DD15 EPA07 (2007-09) Fault Code: SPN 973 FMI 13 (CPC) Engine Retarder Selection Signal is Missing NOTE: Please see the step by step troubleshooting procedures for this specific code. Code 973 FMI 13 indicates a missing engine retarder selection signal, often due to faulty wiring or connectors. 1 SPN 973/FMI 9 79. Detailed code descriptions for Detroit Diesel (DD13) engines. Check for multiple codes: [a] If CPC SPN 168/FMI 0/14/18 (Battery Voltage) are present troubleshoot these first. If only a “J1939 Error” fault is present, go to the next step. If MCM SPN 625/FMI 9 is present, troubleshoot and repair the CAN line. 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