Logo

P2291 Engine Trouble Code

Meaning of P2291 engine trouble code is : P2291 code can be about replacing a broken oxygen sensor can eventually lead to a busted catalytic convertor which can cost upwards of $2,000. Taking your car into a shop will cost you around $200 depending on the car. However, an oxygen sensor is easy to replace on many cars and is usually detailed in the owner's manual. If you know where the sensor is, you only have to unclip the old sensor and replace it with a new one. Regardless of how you approach it, you should get this fixed right away.

P2291 Possible Solution:

P2291 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.

P2291 Code Meaning :

P 2 2 9 1
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine Fuel And Air Metering (Injector Circuit Malfunctions Only) Manifold Absolute Pressure/Barometric Pressure Circuit High Input Crankshaft Position Sensor A Circuit Malfunction Crankshaft Position Sensor A Circuit Low Input

Regarding the P2291 code, it would probably be worthwhile to carefully inspect the wire harness near the intake manifold bracket. This is done most easily from below the car in the area near the oil filter.

P2291 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P2291 engine trouble code is about Crankshaft Position Sensor A Circuit Low Input.

Reason For P2291 Code

The reason of P2291 OBD-II Engine Trouble Code is Manifold Absolute Pressure/Barometric Pressure Circuit High Input.

P2291 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.