C3493 Volvo C70 OBD Code

OBD/2 C3493 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.

C3493 Volvo C70 Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine C3493 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 passenger door disarm switch ckt short to ground 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 passenger door disarm switch ckt short to ground.

Common Causes of Volvo C70 C3493 OBD2 Code

A common cause of code C3493 is the failure of Passenger Door Disarm Switch ckt Short to Ground, but there are several other possible causes as well, such as ;

Damaged camshaft position (CMP) sensor
Failures of clutch motion/travel sensors.
EVAP canister or fuel tank leaks
Continuous oil flow to the VCT piston chamber

C3493 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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C3493 Volvo C70 OBD Code

C3493 Volvo C70 Error Code Repair Process :

Common Causes of Volvo C70 C3493 OBD2 Code

C3493 code for other Volvo cars