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U3155 Engine Code Repair

Meaning of U3155 engine trouble code is a kind of network trouble code and theoretically you can drive for a few weeks or even months with a broken MAF sensor. You will notice a decrease in gas mileage and over time the car will eventually start stalling a lot. At a shop, the replacement cost is between $240-$400 depending on the car, but that's usually the cost of parts because the labor is relatively simple.

U3155 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 U3155 code is occuring now you should check U3155 repair processes.
Now don't ask yourself; What should you do with U3155 code ?
The solution is here :

U3155 Possible Solution:

U3155 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.

U3155 Code Meaning :

U
OBD-II Diagnostic Network (U) Trouble Code For Engine

3
Ignition System Or Misfire

1
Ambient Air Temperature Sensor Circuit Low

5
Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)

5
Timing Reference High Resolution Signal A Too Many Pulses

Regarding the U3155 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.

U3155 OBD-II Diagnostic Network (U) Trouble Code Description

U3155 engine trouble code is about Timing Reference High Resolution Signal A Too Many Pulses.

Main reason For U3155 Code

The reason of U3155 OBD-II Engine Trouble Code is Ambient Air Temperature Sensor Circuit Low.

Parts or components should not be replaced with reference to only a U3155 DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.