B1891 Engine Error Code

When you check engine light came on code B1891 the reason should be . However your vehicle's manufacturer may have a different definition for the B1891 OBD-II Diagnostic Body (B) Trouble Code. So you should chech it on your car models.

B1891 Code Symptoms

B1891 OBD2 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.

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.

B1891 OBD-II Diagnostic Body (B) Trouble Code Description B1891 Air Bag Tone Warning Indicator Circuit Short to Battery so you have to check ODB-II Engine Error Code list. B1891 Code Review : The reason of B1891 OBD-II Engine Error Code is B1891 Air Bag Tone Warning Indicator Circuit Short to Battery.

B1891 Code Dictionary Meaning:

b - Body Code - Problem is antilock brake system, electronic suspension and steering systems. 1 - MFG - Manufacturer Specific 8 - Accelerator Pedal Position (APP) Sensor 1 Performance 9 - TP Sensor Learn Not Complete 1 - PCM Stack Overrun

How long can you drive with a B1891 code ?

If your vehicle is displaying a B1891 OBD2 error code but is still running and driving normally, it means that the issue might not be immediately critical or causing immediate harm to the vehicle. However, it's important to address the issue as soon as possible for several reasons:

• Potential for Worsening
• Decreased Fuel Efficiency
• Emissions Testing Compliance
• Risk of Further Damage
• Safety Concerns
• Legal Considerations