C0390 Trouble Code

View C0390 obd/2 error code description and symptoms. C0390 engine photo

Brake Switch Circuit Input Malfunction Indicates PCM did not receive a brake pedal position (BPP) input. 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 or Lighting Control Module (LCM) Continental and Town Car. Damaged brake switch Misadjusted brake switch Check for proper function of stoplamps.

As long as the throttle plate remains closed, the idling speed and quality is controlled by the PCM via the idle control valve, and as can be seen from the above it should be clear that idle control on a gasoline engine is a complex affair. For instance, if the engine is started in sub-zero temperatures, the PCM will command the idling control valve to allow less air to enter the engine to enrich the air/fuel mixture to create a condition which is roughly analogous to how chokes worked on carburetted engines to control idling in cold weather.

Difficulty Level (Easy)
Level
Repair Time (20 Min.)
Time
Cost Prediction : $ 40-75

C0390 Error Code Repair Process :

If your pad warning lamp inoperative check engine light is illuminated, it's best to take it in for diagnostic testing, which can feel like a hassle. Because while the lights vary in appearance from vehicle to vehicle, all have the same basic meaning: There's a problem with the car's emissions system. The on-board diagnostics system C0390 and engine control unit are in charge of monitoring a bunch of different pad warning lamp inoperative, and if they get a reading that's a little out of whack, up pops the check engine light.

Wrench Tool C0390 is a kind of Chassis Trouble Code

Diagnosing chassis noises can be one of the most frustrating problems technicians face. Fortunately, manufacturers have engineered noise, vibration and harshness (NVH) diagnostic techniques and equipment to find the source of the noise.

Common Causes of C0390

A common cause of code C0390 is the failure of PAD Warning Lamp Inoperative, but there are several other possible causes as well, such as ;

C0390 code for all cars

You can view according C0390 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+C0390 Continental Mk Ii +C0390 Plymouth Gran Fury +C0390 Toyota Avallon +C0390 Fiat Tempra +C0390 Mercedes-benz 150

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