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B2639 Engine Trouble Code

Meaning of B2639 engine trouble code is a kind of body trouble code and B2639 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.

B2639 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 B2639 code is occuring now you should check B2639 repair processes.
Now don't ask yourself; What should you do with B2639 code ?
The solution is here :

B2639 Possible Solution:

B2639 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.

B2639 Code Meaning :

B 2 6 3 9
OBD-II Diagnostic Body (B) Trouble Code For Engine Fuel And Air Metering (Injector Circuit Malfunctions Only) Fuel Temperature Sensor B Circuit Range/Performance Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector) Reverse Input Circuit

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.

B2639 OBD-II Diagnostic Body (B) Trouble Code Description

B2639 engine trouble code is about Reverse Input Circuit.

Main reason For B2639 Code

The reason of B2639 OBD-II Engine Trouble Code is Fuel Temperature Sensor B Circuit Range/Performance.

B2639 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.