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U1125 Engine Trouble Code

Meaning of U1125 engine trouble code is : U1125 if your catalytic convertor fails completely, you eventually won't be able to keep the car running. Your gas mileage will also be terrible, so you should try and fix it as soon as you can. Unfortunately, the average replacement cost is around $2,000 and you can't do it yourself unless you're an experienced mechanic.

U1125 Possible Solution:

U1125 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.

U1125 Code Meaning :

U 1 1 2 5
OBD-II Diagnostic Network (U) Trouble Code For Engine Fuel And Air Metering Fuel Rail/System Pressure - Too High Turbocharger Boost Sensor A Circuit Low Crankshaft Position Sensor B Circuit Malfunction

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.

U1125 OBD-II Diagnostic Network (U) Trouble Code Description

U1125 engine trouble code is about Crankshaft Position Sensor B Circuit Malfunction.

Reason For U1125 Code

The reason of U1125 OBD-II Engine Trouble Code is Fuel Rail/System Pressure - Too High.

U1125 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.