P02EF Vespa 400 OBD Code

OBD/2 P02EF 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) P02EF DTC is a check of the VCT unit.

As long as the throttle plate remains closed, the idling speed and quality is controlled by the PCM via the idle control valve, and as can be seen from the above it should be clear that idle control on a gasoline engine is a complex affair. For instance, if the engine is started in sub-zero temperatures, the PCM will command the idling control valve to allow less air to enter the engine to enrich the air/fuel mixture to create a condition which is roughly analogous to how chokes worked on carburetted engines to control idling in cold weather.

P02EF Vespa 400 Error Code Repair Process :

If your control module vss output a malfunction check engine light is illuminated, it's best to take it in for diagnostic testing, which can feel like a hassle. Because while the lights vary in appearance from vehicle to vehicle, all have the same basic meaning: There's a problem with the car's emissions system. The on-board diagnostics system P02EF and engine control unit are in charge of monitoring a bunch of different control module vss output a malfunction, and if they get a reading that's a little out of whack, up pops the check engine light.

Difficulty Level (Easy)

Repair Time (20 Min.)

Cost Prediction : $ 40-75

Common Causes of Vespa 400 P02EF OBD2 Code

A common cause of code P02EF is the failure of Control Module VSS Output A Malfunction, but there are several other possible causes as well, such as ;

• Camshaft advance mechanism binding (VCT unit)
• 1Camshaft Position Sensor circuit poor electrical connection
• Fuel Injectors circuit poor electrical connection
• Failures of clutch motion/travel sensors.

P02EF is a kind of Powertrain Trouble Code Powertrain of a modern automobile, comprising engine (with exhaust system), transmission, drive shaft, suspension and the wheels. In a motor vehicle, the term powertrain or powerplant describes the main components that generate power and deliver it to the road surface, water, or air.

P02EF code for other Vespa cars

You can view according P02EF DTC for your car model. We selected several models to see obd2 solutions click and view it.

Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.

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