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U0669 Engine Trouble Code

Meaning of U0669 engine trouble code is a kind of network trouble code and U0669 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.

U0669 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 U0669 code is occuring now you should check U0669 repair processes.
Now don't ask yourself; What should you do with U0669 code ?
The solution is here :

U0669 Possible Solution:

U0669 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.

U0669 Code Meaning :

U 0 6 6 9
OBD-II Diagnostic Network (U) Trouble Code For Engine Intake Valve Control Solenoid Circuit Low Fuel Temperature Sensor B Circuit Range/Performance Cylinder 4 Contribution/Balance Fault Reverse Input Circuit

Regarding the U0669 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.

U0669 OBD-II Diagnostic Network (U) Trouble Code Description

U0669 engine trouble code is about Reverse Input Circuit.

Main reason For U0669 Code

The reason of U0669 OBD-II Engine Trouble Code is Fuel Temperature Sensor B Circuit Range/Performance.

U0669 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.