C3748 Cadillac 50 OBD Code

OBD/2 C3748 error code description and symptoms.

Engine Coolant Temperature (ECT) Circuit High Input Indicates the sensor signal is greater than Self-Test maximum. The ECT sensor maximum is 4.6 volts or -50 C (-58 F). Note on some vehicles that are not equipped with an ECT sensor, CHT can be used and can set this DTC. Open circuit in harness Sensor signal short to power Damaged PCM Improper harness connection Damaged sensor ECT V PID reading greater than 4.6 volts with key ON and engine OFF or during any engine operating mode indicates a hard fault.

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.

C3748 Cadillac 50 Error Code Repair Process :

The scent may C3748 signal oil or coolant leaking from their normally closed-loop systems, or it may indicate dangerous exhaust gases invading your car's interior. Car and truck exhaust contains toxic gases such C3748, so if the inside of your car abs inlet valve coil rr circuit short to battery as if you were standing behind your car, get out and get it fixed. Fight the urge to take a little nap first. So sleepy. That's the carbon monoxide talking, friends. At least open a window on your way to the shop.

Common Causes of Cadillac 50 C3748 OBD2 Code

A common cause of code C3748 is the failure of ABS Inlet Valve Coil RR Circuit Short To Battery, but there are several other possible causes as well, such as ;

Engine Control Module (ECM)
Damaged VCT phaser
Faulty Crankshaft Position Sensor (POS)
Improper ignition timing

C3748 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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C3748 Cadillac 50 OBD Code

C3748 Cadillac 50 Error Code Repair Process :

Common Causes of Cadillac 50 C3748 OBD2 Code

C3748 code for other Cadillac cars