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P3955 Engine Trouble Code

Meaning of P3955 engine trouble code is a kind of powertrain trouble code and P3955 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.

P3955 Fault Symptoms :

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

If one of these reasons for P3955 code is occuring now you should check P3955 repair processes.
Now don't ask yourself; What should you do with P3955 code ?
The solution is here :

P3955 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.

P3955 Code Meaning :

P	3	9	5	5
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine	Ignition System Or Misfire	Injector Circuit Malfunction - Cylinders	Cylinder 1 Injector 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.

P3955 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P3955 engine trouble code is about Crankshaft Position Sensor B Circuit Malfunction.

Main reason For P3955 Code

The reason of P3955 OBD-II Engine Trouble Code is Injector Circuit Malfunction - Cylinders.

P3955 code on vehicles with electronically controlled automatic transmissions, the 3-4 shift solenoid is responsible for actuating the hydraulic circuits to activate clutches or bands that change gears inside the automatic transmission.

	Example: 0140