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U3143 Engine Trouble Code

Meaning of U3143 engine trouble code is a kind of network trouble code and U3143 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 $2,140 and you can't do it yourself unless you're an experienced mechanic.

U3143 Fault Symptoms :

Check engine light comes on
Engine stalling or misfiring
Engine performance issues
Car not starting

If one of these reasons for U3143 code is occuring now you should check U3143 repair processes.
Now don't ask yourself; What should you do with U3143 code ?
The solution is here :

U3143 Possible Solution:

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.

U3143 Code Meaning :

U	3	1	4	3
OBD-II Diagnostic Network (U) Trouble Code For Engine	Ignition System Or Misfire	Fuel Rail/System Pressure - Too High	Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)	Exhaust Gas Recirculation Sensor B Circuit High

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.

U3143 OBD-II Diagnostic Network (U) Trouble Code Description

U3143 engine trouble code is about Exhaust Gas Recirculation Sensor B Circuit High.

Main reason For U3143 Code

The reason of U3143 OBD-II Engine Trouble Code is Fuel Rail/System Pressure - Too High.

U3143 DTC reports a sensor fault, replacement of the sensor is unlikely to resolve the underlying problem. The fault is most likely to be caused by the systems that the sensor is monitoring, but might even be caused by the wiring to the sensor itself.

	Example: 0140