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P1668 Engine Trouble Code

Meaning of P1668 engine trouble code is a kind of powertrain trouble code and P1668 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.

P1668 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 P1668 code is occuring now you should check P1668 repair processes.
Now don't ask yourself; What should you do with P1668 code ?
The solution is here :

P1668 Possible Solution:

P1668 Engine

Power Steering Pressure (PSP) Switch Malfunction In Key On, Engine Off Self-Test, this DTC indicates the PSP input to the PCM is high. In Key On, Engine Running Self-Test, this DTC indicates that the PSP input did not change state. Steering wheel must be turned during Key On, Engine Running Self-Test PSP switch/shorting bar damaged SIG RTN circuit open PSP circuit open or shorted to SIGRTN PCM damaged.

P1668 Code Meaning :

P 1 6 6 8
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine Fuel And Air Metering Fuel Temperature Sensor B Circuit Range/Performance Cylinder 4 Contribution/Balance Fault Clutch Position Sensor Circuit Malfunction

Regarding the P1668 code, it would probably be worthwhile to carefully inspect the wire harness near the intake manifold bracket. This is done most easily from below the car in the area near the oil filter.

P1668 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P1668 engine trouble code is about Clutch Position Sensor Circuit Malfunction.

Main reason For P1668 Code

The reason of P1668 OBD-II Engine Trouble Code is Fuel Temperature Sensor B Circuit Range/Performance.

P1668 DTC specifically refers to the camshaft (cam) timing. In this case, if the cam timing is over-retarded, the engine light will be illluminated and the code will be set.