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C0685 Engine Code Repair

Meaning of C0685 engine trouble code is a kind of chassis trouble code and C0685 code can be about replacing a broken oxygen sensor can eventually lead to a busted catalytic convertor which can cost upwards of $2,200. Taking your car into a shop will cost you around $210 depending on the car. However, an oxygen sensor is easy to replace on many cars and is usually detailed in the owner's manual. If you know where the sensor is, you only have to unclip the old sensor and replace it with a new one. Regardless of how you approach it, you should get this fixed right away.

C0685 Fault Symptoms :

  1. Check engine light comes on
  2. Engine stalling or misfiring
  3. Engine performance issues
  4. Car not starting

If one of these reasons for C0685 code is occuring now you should check C0685 repair processes.
Now don't ask yourself; What should you do with C0685 code ?
The solution is here :

C0685 Possible Solution:

C0685 Engine

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.

C0685 Code Meaning :

C
OBD-II Diagnostic Chassis (C) Trouble Code For Engine

0
Intake Valve Control Solenoid Circuit Low

6
Fuel Composition Sensor Circuit Malfunction

8
Cylinder 10 Contribution/balance Fault

5
Timing Reference High Resolution Signal A Too Many Pulses

The catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the upstream oxygen sensor waveform reading should fluctuate.

C0685 OBD-II Diagnostic Chassis (C) Trouble Code Description

C0685 engine trouble code is about Timing Reference High Resolution Signal A Too Many Pulses.

Main reason For C0685 Code

The reason of C0685 OBD-II Engine Trouble Code is Fuel Composition Sensor Circuit Malfunction.

C0685 the main thing to check is to verify the operation of the VCT solenoid. You're looking for a sticking or stuck VCt solenoid valve caused by contamination. Refer to vehicle specific repair manual to perform component tests for the VCT unit.