C3690 Trouble Code

View C3690 obd/2 error code description and symptoms. C3690 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 the engine heats up and combustion becomes easier and more complete, the PCM will command the idling control valve to increase the amount of air entering the engine to suit the changing conditions. However, when the load on the engine changes, say, when some electrical consumers or other systems are either turned on or off, the PCM adapts the signal voltage to the idle control valve to ensure that the idling speed remains stable, and at the RPM specified by the manufacturer.

C3690 Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine C3690 light should flash briefly, indicating that the OBD system is ready to scan your vehicle for any malfunctions. After this brief flash, the light should stay off while you drive as long as no problems are detected. If abs inlet valve coil lf circuit failure so, you'll be glad to know that your vehicle is equipped with an early warning system that could save you time, money, and fuel in addition to helping protect the abs inlet valve coil lf circuit failure.

C3690 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 C3690

A common cause of code C3690 is the failure of ABS Inlet Valve Coil LF Circuit Failure, but there are several other possible causes as well, such as ;

Failures of clutch motion/travel sensors.
Exhaust tube
Faulty TCM or TCM programming
Fuel filler cap remains open or fails to close

C3690 code for all cars

You can view according C3690 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+C3690 Mazda Persona

+C3690 Alfa Romeo 156

+C3690 Revere M

+C3690 Peugeot Quadricycle

+C3690 Lancia Ypsilon

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