C1801 Nissan 720 OBD Code

OBD/2 C1801 error code description and symptoms.

Mass Air Flow (MAF) Sensor Intermittent The MAF sensor circuit is monitored by the PCM for sudden voltage (or air flow) input change through the comprehensive component monitor (CCM). If during the last 40 warm-up cycles in key ON engine running the PCM detects a voltage (or air flow) change beyond the minimum or maximum calibrated limit, a continuous memory diagnostic trouble code (DTC) is stored.

One example of this would be when an automatic vehicle in placed in gear. To prevent the added drag from the torque converter and transmission from reducing the idling speed, the PCM will command the idle control valve to allow more air to enter the engine, while at the same time, adjusting the injector pulse width to inject more fuel to suit the increased amount of air. Note that the idle air control valve is closed by the PCM when the throttle plate is opened to prevent excess air from entering the engine.

C1801 Nissan 720 Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine C1801 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 cylinder 1 contribution/balance fault 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 cylinder 1 contribution/balance fault.

Common Causes of Nissan 720 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 ;

Damaged camshaft position (CMP) sensor
Faulty Variable Camshaft Timing (VCT) position solenoid
Faulty Intake Valve Timing Control Solenoid Valve
Loss of ground.

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 720 OBD Code

C1801 Nissan 720 Error Code Repair Process :

Common Causes of Nissan 720 C1801 OBD2 Code

C1801 code for other Nissan cars