Gmc Sierra 1500 Hd P1685 Engine Error Code

When you check Gmc Sierra 1500 Hd car engine light came on code P1685 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However Gmc manufacturer may have a different definition for the P1685 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.

To solve P1685 Gmc Sierra 1500 Hd problem, you'll have to remove the muffler, crankcase and other components blocking the valve chamber. Then, remove the cylinder head bolts (label for easy re-installation) Adjust the jaws of the valve spring compressor until they touch the top and bottom of the valve chamber Push the tool in to compress the spring and tighten the jaws Remove the retainers and lift out the valves , compressors and springs

Gmc Sierra 1500 Hd P1685 OBD-II Diagnostic Powertrain (P) Trouble Code Description P1685 Metering Oil Pump Stepping Motor Circuit Malfunction so you have to check ODB-II Engine Error Code list. Reason For Gmc Sierra 1500 Hd P1685 Code The reason of Gmc Sierra 1500 Hd P1685 OBD-II Engine Error Code is P1685 Metering Oil Pump Stepping Motor Circuit Malfunction.

If your vehicle failed a P1685 Gmc Sierra 1500 Hd test and the Check Engine Light is NOT on, chances are you have a problem with the OBDII system, a burned out MIL lamp, or a faulty catalytic converter. The converter is essentially an afterburner that cleans up the exhaust after it exits the engine. The OBDII system uses a ownstream oxygen sensor to monitor the efficiency of the converter, and it should detect a drop in converter efficiency if the converter has been contaminated or is failing (ignition misfiring, leaky exhaust valves, and oil burning can all damage the converter). What you want to look P1685 Gmc Sierra 1500 Hd: Any conditions that might cause ignition misfire, an overly rich or lean fuel condition, or loss of compression.

Gmc Sierra 1500 Hd P1685 Possible Solution :

Power Steering Pressure (PSP) Switch Signal Malfunction The PCM counts the number of times vehicle speed transitions from 0 to a calibratable speed. After a calibratable number of speed transitions the PCM expects that the PSP input should have changed. This DTC is set if the transition is not detected. Vehicle towed with engine running Power steering hydraulic concern was repaired but DTC was not erased PSP switch/shorting bar damaged SIG RTN circuit open PSP circuit open or shorted to SIGRTN PCM damaged Check, if possible, if vehicle was towed or power steering service was performed. Observe PSP V PID while checking wires for intermittents.

What does fault code P1685 mean for Gmc Sierra 1500 Hd ? What does a diagnostic reading P1685 mean for Gmc Sierra 1500 Hd ? How to fix OBD2 Code P1685 for Gmc Sierra 1500 Hd ? What do we know about P1685 code for Gmc Sierra 1500 Hd ?