P3921 Porsche 718 OBD Code

OBD/2 P3921 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 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.

P3921 Porsche 718 Error Code Repair Process :

If your park switch indicates park with vehicle moving 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 P3921 and engine control unit are in charge of monitoring a bunch of different park switch indicates park with vehicle moving, 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 Porsche 718 P3921 OBD2 Code

A common cause of code P3921 is the failure of Park Switch Indicates Park with Vehicle Moving, but there are several other possible causes as well, such as ;

• Damaged camshaft position (CMP) sensor
• Faulty Air Flow Meter
• Faulty Variable Camshaft Timing (VCT) position solenoid
• Three way catalyst converter Bank 1

P3921 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.

P3921 code for other Porsche cars

You can view according P3921 DTC for your car model. We selected several models to see obd2 solutions click and view it.

• P3921 Porsche 1300
• P3921 Porsche 3400
• P3921 Porsche 356
• P3921 Porsche 550
• P3921 Porsche 804
• P3921 Porsche 901
• P3921 Porsche 904
• P3921 Porsche 906
• P3921 Porsche 907
• P3921 Porsche 908
• P3921 Porsche 910
• P3921 Porsche 911
• P3921 Porsche 911 Type 991
• P3921 Porsche 911 Type 996
• P3921 Porsche 911 Type 997
• P3921 Porsche 912
• P3921 Porsche 914
• P3921 Porsche 917
• P3921 Porsche 924
• P3921 Porsche 928
• P3921 Porsche 930
• P3921 Porsche 931
• P3921 Porsche 935
• P3921 Porsche 936
• P3921 Porsche 937
• P3921 Porsche 944
• P3921 Porsche 959
• P3921 Porsche 962
• P3921 Porsche 964
• P3921 Porsche 965
• P3921 Porsche 968
• P3921 Porsche 986
• P3921 Porsche 993
• P3921 Porsche 996
• P3921 Porsche Boxster
• P3921 Porsche Boxster Type 981
• P3921 Porsche Boxster Type 986
• P3921 Porsche Boxster Type 987
• P3921 Porsche Carrera Gt
• P3921 Porsche Cayenne
• P3921 Porsche Cayenne Type 92a
• P3921 Porsche Cayenne Type 9pa
• P3921 Porsche Cayman
• P3921 Porsche Cayman Type 718
• P3921 Porsche Cayman Type 981
• P3921 Porsche Cayman Type 987
• P3921 Porsche Coupe
• P3921 Porsche Dp
• P3921 Porsche Gt
• P3921 Porsche Gt2
• P3921 Porsche Gt3
• P3921 Porsche Karisma
• P3921 Porsche Kremer
• P3921 Porsche Macan Type 95b
• P3921 Porsche Mega
• P3921 Porsche Panamera Type 970
• P3921 Porsche Panamericana
• P3921 Porsche Rsk
• P3921 Porsche Tapiro

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