C3930 Mazda 626 OBD Code

OBD/2 C3930 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.

As the engine heats up and combustion becomes easier and more complete, the PCM will command the idling control valve to increase the amount of air entering the engine to suit the changing conditions. However, when the load on the engine changes, say, when some electrical consumers or other systems are either turned on or off, the PCM adapts the signal voltage to the idle control valve to ensure that the idling speed remains stable, and at the RPM specified by the manufacturer.

C3930 Mazda 626 Error Code Repair Process :

The rule of C3930 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 suspension rear height sensor low signal circuit open. Likewise, overriding the OBD C3930 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 Mazda 626 C3930 OBD2 Code

A common cause of code C3930 is the failure of Air Suspension Rear Height Sensor Low Signal Circuit Open, but there are several other possible causes as well, such as ;

Damaged camshaft position (CMP) sensor
Camshaft Position Sensor harness is open or shorted
Damaged ECM
Ignition coils circuit poor electrical connection

C3930 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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C3930 Mazda 626 OBD Code

C3930 Mazda 626 Error Code Repair Process :

Common Causes of Mazda 626 C3930 OBD2 Code

C3930 code for other Mazda cars