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B0443 Engine Trouble Code

Meaning of B0443 engine trouble code is : B0443 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.

B0443 Possible Solution:

B0443 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.

B0443 Code Meaning :

B 0 4 4 3
OBD-II Diagnostic Body (B) Trouble Code For Engine Intake Valve Control Solenoid Circuit Low O2 Sensor Heater Circuit Malfunction 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.

B0443 OBD-II Diagnostic Body (B) Trouble Code Description

B0443 engine trouble code is about Exhaust Gas Recirculation Sensor B Circuit High.

Reason For B0443 Code

The reason of B0443 OBD-II Engine Trouble Code is O2 Sensor Heater Circuit Malfunction.

B0443 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.