P0542 Engine Error Code

When you check engine light came on code P0542 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However your vehicle's manufacturer may have a different definition for the P0542 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on your car models.

P0542 Code Symptoms

P0542 OBD2 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.

Brake Switch Out of Self-Test Range Indicates that during Key On Engine Off (KOEO) Self-Test, BPP signal was high. Or during Key On Engine Running (KOER) Self -Test, the BPP signal did not cycle high and low. Open or short in (BPP) circuit Open or short in stoplamp circuits Damaged PCM Malfunction in module(s) connected to BPP circuit (Rear Electronic Module [REM] Windstar and LS6/LS8 and Lighting Control Module (LCM) Continental and Town Car) Damaged Brake Switch Misadjusted Brake Switch Check for proper function of stoplamps. Follow correct Self-Test procedures, refer to Section 2, Quick Test.

P0542 OBD-II Diagnostic Powertrain (P) Trouble Code Description P0542 OBD-II Trouble Code The Engine Control Module ( P0542 Code Review : The reason of P0542 OBD-II Engine Error Code is P0542 Intake Air Heater Relay 1 High.

P0542 Code Dictionary Meaning:

p - Powertrain Code - Problem is related engine, transmission and emissions systems. 0 - SAE - Generic 5 - Auxiliary Emission Controls 4 - Control Module Throttle Actuator Position Performance 2 - Kick-Down Switch Failed Short

How long can you drive with a P0542 code ?

If your vehicle is displaying a P0542 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