C1801 Nissan Alpha OBD Code

OBD/2 C1801 error code description and symptoms.

Variable Cam Timing Over-advanced (Bank 1) The comprehensive component monitor (CCM) monitors the VCT position for an over-advanced camshaft timing.
The test fails when the camshaft timing exceeds a maximum calibrated value or remains in an advanced position. Cam timing improperly set No oil flow to the VCT piston chamber Low oil pressure VCT solenoid valve stuck closed Camshaft advance mechanism binding (VCT unit) C1801 DTC is a check of the VCT unit.

Some systems require that the actuator has an adequate supply of brake fluid. Low brake fluid levels can mimic the symptoms of code C1801, so consult the manual to locate the brake fluid reservoir. Bear in mind that a low fluid level can set code C1801 on some applications, so make sure that on fluid operated systems the fluid level is up to the mark before starting an electrical diagnosis.

C1801 Nissan Alpha Error Code Repair Process :

The rule of C1801 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 cylinder 1 contribution/balance fault. Likewise, overriding the OBD C1801 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.

Common Causes of Nissan Alpha C1801 OBD2 Code

A common cause of code C1801 is the failure of Cylinder 1 Contribution/Balance Fault, but there are several other possible causes as well, such as ;

Camshaft advance mechanism binding (VCT unit)
Faulty select solenoid
Camshaft Position Sensor harness is open or shorted
Clogged or faulty fuel injector (s)

C1801 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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C1801 Nissan Alpha OBD Code

C1801 Nissan Alpha Error Code Repair Process :

Common Causes of Nissan Alpha C1801 OBD2 Code

C1801 code for other Nissan cars