C0438 Trouble Code

View C0438 obd/2 error code description and symptoms. C0438 engine photo

Fuel Rail Pressure Sensor in Range But Low The comprehensive component monitor (CCM) monitors the FRP pressure for acceptable fuel pressure. The test fails when the fuel pressure falls below a calibrated value. Low fuel pressure Damaged FRP sensor Excessive resistance in circuit Low or no fuel A FRP PID value below 551 kpa (80 psi) indicates a failure Low or no fuel A FRP PID value greater than 896 kpa (130 psi) indicates a failure.

Some systems require that the actuator has an adequate supply of brake fluid. Low brake fluid levels can mimic the symptoms of code C0438, so consult the manual to locate the brake fluid reservoir. Bear in mind that a low fluid level can set code C0438 on some applications, so make sure that on fluid operated systems the fluid level is up to the mark before starting an electrical diagnosis.

C0438 Error Code Repair Process :

The rule of C0438 code when it comes to emissions-related vehicle repair is that any modification that changes the vehicle from a certified configuration to a non-certified configuration is considered tampering: this applies to both vehicle owners and repair facilities and is, therefore, a Federal offense. Replacing a catalyst with a straight pipe is one traditional example of air bag driver circuit short to ground. Likewise, overriding the OBD C0438 error in system through the use of high-tech defeat devices or non-certified computer chips, for example, would also be considered tampering. The OBD system may, however, be repaired back to its original certified configuration with certified performance chips or appropriate aftermarket parts.

C0438 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 C0438

A common cause of code C0438 is the failure of Air Bag Driver Circuit Short To Ground, but there are several other possible causes as well, such as ;

Erratic camshaft position due to low oil pressure
Faulty ignition coil (s)
Faulty Variable Camshaft Timing (VCT) position solenoid
Air fuel ratio (A/F) Sensor 1 Bank 1 harness is open or shorted

C0438 code for all cars

You can view according C0438 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+C0438 Mg Ex-e

+C0438 Land Rover Velar

+C0438 Toyota Highlander

+C0438 Bentley T

+C0438 Scott Sociable

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