P1683

PCM - IDM Communications Error

DTC P1683, sometimes indicated as P168300 is an OBD diagnostic trouble code indicating a manufacturer-specific fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the transmission (gearbox) causing pcm - idm communications error.

  • P1683: PCM - IDM Communications Error

DTC Trouble Code Search
Bulletins

Bulletins are notices put out by manufacturers in conjunction with the NHTSA to notify the public of manufacturing issues or changes.

  • 040604026 - ENGINE AND ENGINE COOLING:ENGINE
    UNKNOWN: Service manual update diagnostic trouble code (dtc) P0601-P0607, P1600, P1621, P1627, P1680, P1681, P1683, or P2610. This pertains to the 2004 saturn l-series. *mr
  • 010604052A - ENGINE AND ENGINE COOLING:ENGINE
    OLDSMOBILE: On-board diagnostic (obd) system improvements - service engine soon light on, diagnostic trouble code (dtc) P0014, P0116, or P1683 set, delayed transmission downshift and/or excessive fan noise. *tt
  • 030604029 - ENGINE AND ENGINE COOLING:ENGINE
    SATURN: Check engine light (service engine soon) illuminated, diagnostic trouble code P1683 and/or P0116 set. *tt
  • 021001 - ELECTRICAL SYSTEM:IGNITION:MODULE
    OLDSMOBILE: Information regarding engine soon lamp being illuminated for diagnostic trouble code,P0014, P1683 or P0116 a delayed transmission downshift and/or excessive fan noise. *yh
  • 300801 - ELECTRICAL SYSTEM:IGNITION:MODULE
    OLDSMOBILE: Information regarding unresolved dtc P0014, false dtc P0116 and P1683. *yh
  • 01T37 - ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
    SATURN: Some customers may complain of the service engine soon lamp illuminating with P0116 or P1683 set in pcm history. *slc
  • 140601 - POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM, PCM)
    CHEVROLET: This message is about a flase diagnostic trouble code, P1683, which is the ignition off timer performance. *tt
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