C2378 Mazda Sw-x OBD Code

OBD/2 C2378 error code description and symptoms.

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.

C2378 Mazda Sw-x Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine C2378 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 immobilizer/ecm communication error 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 immobilizer/ecm communication error.

Common Causes of Mazda Sw-x C2378 OBD2 Code

A common cause of code C2378 is the failure of Immobilizer/ECM Communication Error, but there are several other possible causes as well, such as ;

Failures of clutch motion/travel sensors.
Faulty Crankshaft Position Sensor (POS)
Faulty Camshaft Position Sensor
Faulty front heated oxygen sensor

C2378 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.

Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.

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C2378 Mazda Sw-x OBD Code

C2378 Mazda Sw-x Error Code Repair Process :

Common Causes of Mazda Sw-x C2378 OBD2 Code

C2378 code for other Mazda cars