Check B1491 Fault Code
When you check engine light came on code B1491 the reason should be . However your vehicle's manufacturer may have a different definition for the B1491 OBD-II Diagnostic Body (B) Trouble Code. So you should chech it on our car models.
|
B1491 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. |
B1491 Possible Fix :
If the culprit is a poor fuel pressure regulator, then I suggest looking around for a replacement part and taking your car to your local mechanic for installation. If you're a skilled mechanic, then you should be able to install a new fuel pressure regulator easily. But if you're just starting out, it's always best to have the professionals take care of this job. Believe me, the fuel pressure regulator is not an easy part to install.
B1491 OBD-II Diagnostic Body (B) Trouble Code DescriptionB1491 Ignition Cylinder Sensor Circuit Failure so you have to check ODB-II Fault Code Check list.Reason For B1491 CodeThe reason of B1491 OBD-II Fault Code Check is B1491 Ignition Cylinder Sensor Circuit Failure. |
B1491 Solution:
Power Steering Pressure (PSP) Switch Signal Malfunction The PCM counts the number of times vehicle speed transitions from 0 to a calibratable speed. After a calibratable number of speed transitions the PCM expects that the PSP input should have changed. This DTC is set if the transition is not detected. Vehicle towed with engine running Power steering hydraulic concern was repaired but DTC was not erased PSP switch/shorting bar damaged SIG RTN circuit open PSP circuit open or shorted to SIGRTN PCM damaged Check, if possible, if vehicle was towed or power steering service was performed. Observe PSP V PID while checking wires for intermittents.
|
What does fault code B1491 mean ?
|
How to Clear B1491 Trouble Code
An OBD 2 scanner is the best and safest way to erase a DTC from your car's system. This scanner communicates with the car's computer and instructs the computer to erase the code. It does not change or tweak the settings from inside the car or its systems.