C3921 Trouble Code

View C3921 obd/2 error code description and symptoms. C3921 engine photo

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.

To check for an open circuit, trace along the length of the transmission control circuit, checking for breaks in the wiring. Repair any broken wiring and make sure all connectors are fully seated and locked.Pay close attention to connectors, looking for corrosion, bent or broken pins, or moisture in the connector. Repair any connector issues even if they are not specifically part of the transmission control circuit as they may serve a function in providing power to the transmission control circuit.

Difficulty Level (Soso)
Level
Repair Time (50 Min.)
Time
Cost Prediction : $ 30-110

C3921 Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine C3921 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 air suspension front height sensor high (se) signal 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 air suspension front height sensor high (se) signal circuit failure.

Wrench Tool C3921 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 C3921

A common cause of code C3921 is the failure of Air Suspension Front Height Sensor High (SE) Signal Circuit Failure, but there are several other possible causes as well, such as ;

C3921 code for all cars

You can view according C3921 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+C3921 Locomobile 40 +C3921 Chevrolet Relsamo +C3921 Alfa Romeo Rl +C3921 Proton Putra +C3921 Peugeot 204

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