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OBDII Error Codes
Everything pertaining to OBDII diagnostics and error code reading and troubleshooting.
109 Cummins articles in this category
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DTC P1698: NO BUS MESSAGES RECEIVED FROM PCM Monitor & Set Conditions PCM is monitored for receiving BUS messages with ignition on and engine off and with engine running. DTC may set if there is no communication with the PCM. Possible Causes No Response To PCM Open CCD BUS Circuit From PCM To Data Link Connector Ope
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DTC P1740: TORQUE CONVERTER CLUTCH OR OVERDRIVE SOLENOID PERFORMANCE Circuit Description TCC and overdrive clutch are tested when PCM requests TCC engagement in 3rd gear and Overdrive. DTC will set if expected RPM drop is not achieved while attempting to engage TCC and/or Overdrive. DTC indicates malfunctioning torque converter or overdrive clutch. Possible Cause The fol
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DTC P1756: GOVERNOR PRESSURE NOT EQUAL TO TARGET @ 35-40 PSI (DIESEL) Circuit Description Circuit is monitored continuously while ignition is on and engine is running, not in Park or Neutral. DTC sets if governor pressure sensor output is less than 15 psi (1.0 kg/cm2 ) or more than 30 psi (2.1 kg/cm2 ) when requested pressure is 20-25 psi (1.4-1.7 kg/cm2 ) for 2.2 seconds. Test must fail 5 times to set DTC.
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P1757 GOVERNOR PRESSURE ABOVE 3 PSI IN GEAR WITH 0 MPH NOTE: Perform TRANSMISSION VERIFICATION TEST VER-1 after repairs are complete. NOTE: For harness connector terminal identification, see CONNECTOR IDENTIFICATION and/or WIRING Circuit is monitored continuously while ignition is on and engine is running. DTC sets if governor pressure sensor is greater than 3 psi (.2 kg/cm2 ) when requested pressu
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P1762 GOVERNOR PRESSURE SENSOR OFFSET VOLTS TOO LOW OR HIGH NOTE: Perform TRANSMISSION VERIFICATION TEST VER-1 after repairs are complete. NOTE: For harness connector terminal identification, see CONNECTOR IDENTIFICATION and/or WIRING DIAGRAMS . For component locations, see COMPONENT LOCATIONS . Circuit Description Circuit is monitored continuously while ignition is on and engine is runnin
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P1763 GOVERNOR PRESSURE SENSOR VOLTS TOO HIGH NOTE: Perform TRANSMISSION VERIFICATION TEST VER-1 after repairs are complete. NOTE: For harness connector terminal identification, see CONNECTOR IDENTIFICATION and/or WIRING DIAGRAMS . For component locations, see COMPONENT LOCATIONS . Circuit Description Circuit is monitored continuously while ignition is on and engine is running. DTC sets if
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P1764 GOVERNOR PRESSURE SENSOR VOLTS TOO LOW NOTE: Perform TRANSMISSION VERIFICATION TEST VER-1 after repairs are complete. NOTE: For harness connector terminal identification, see CONNECTOR IDENTIFICATION and/or WIRING DIAGRAMS . For component locations, see COMPONENT LOCATIONS . Circuit Description Circuit is monitored continuously while ignition is on and engine is running. DTC sets if g
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P1765 TRANS 12-VOLT SUPPLY RELAY CNTRL CIRCUIT NOTE: Perform TRANSMISSION VERIFICATION TEST VER-1 after repairs are complete. NOTE: For harness connector terminal identification, see CONNECTOR IDENTIFICATION and/or WIRING DIAGRAMS . For component locations, see COMPONENT LOCATIONS . Circuit Description Circuit is monitored continuously while ignition is on. DTC sets if v
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DTC P1899: P/N PERFORMANCE Monitor & Set Conditions Park/Neutral (P/N) switch is monitored continuously with transmission in Park, Neutral or Drive and not in limp-in mode. DTC may be stored if PCM detects an incorrect P/N switch state for an given mode of operation. Possible Causes Intermittent Transmission Range Switch (TRS) Sense Circuit
