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U1555 Engine Code Repair

Meaning of U1555 engine trouble code is a kind of network trouble code and U1555 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.

U1555 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 U1555 code is occuring now you should check U1555 repair processes.
Now don't ask yourself; What should you do with U1555 code ?
The solution is here :

U1555 Possible Solution:

U1555 Engine

Excessive air inflow can be caused by a vacuum leak, a dirty sensor or, an exhaust gas recirculation valve not closing properly. If the problem is not enough fuel, the culprit may be dirty injectors or fuel filters, a weak fuel pump or a leaky fuel pressure regulator. The lean fuel mix error may be accompanied by rough idling, engine misfires, hesitation during acceleration and overall poor engine performance.

U1555 Code Meaning :

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

1
Fuel And Air Metering

5
O2 Sensor Heater Circuit Malfunction

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

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.

U1555 OBD-II Diagnostic Network (U) Trouble Code Description

U1555 engine trouble code is about Timing Reference High Resolution Signal A Too Many Pulses.

Main reason For U1555 Code

The reason of U1555 OBD-II Engine Trouble Code is O2 Sensor Heater Circuit Malfunction.

U1555 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.