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B3951 Engine Trouble Code

Meaning of B3951 engine trouble code is a kind of body trouble code and theoretically you can drive for a few weeks or even months with a broken MAF sensor. You will notice a decrease in gas mileage and over time the car will eventually start stalling a lot. At a shop, the replacement cost is between $200-$300 depending on the car, but that's usually the cost of parts because the labor is relatively simple.

B3951 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 B3951 code is occuring now you should check B3951 repair processes.
Now don't ask yourself; What should you do with B3951 code ?
The solution is here :

B3951 Possible Solution:

B3951 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.

B3951 Code Meaning :

B 3 9 5 1
OBD-II Diagnostic Body (B) Trouble Code For Engine Ignition System Or Misfire Injector Circuit Malfunction - Cylinders Cylinder 1 Injector Circuit Low Crankshaft Position Sensor A Circuit Low Input

The poor running symptoms are consistent with a MAP sensor malfunction. In addition, in some cases, a bad MAP sensor will not throw a code. Again, the ELD code likely represents a separate wiring issue.

B3951 OBD-II Diagnostic Body (B) Trouble Code Description

B3951 engine trouble code is about Crankshaft Position Sensor A Circuit Low Input.

Main reason For B3951 Code

The reason of B3951 OBD-II Engine Trouble Code is Injector Circuit Malfunction - Cylinders.

B3951 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.