P3921 Porsche Boxster OBD Code

OBD/2 P3921 error code description and symptoms.

Low Speed Fuel Pump Primary Circuit Malfunction The PCM monitors the low speed fuel pump (LFP) primary circuit output from the PCM.
The test fails if: When the LFP circuit is commanded on (grounded), excessive current draw is detected on the LFP circuit; or when the LFP circuit is commanded off, voltage is not detected on the LFP circuit (the PCM expects to detect VPWR voltage coming through the low speed fuel pump relay coil to the LFP circuit). Open or shorted low fuel pump (LFP) circuit Open VPWR to low speed fuel pump relay Damaged low speed fuel pump relay Damaged PCM An open circuit or short to ground can only be detected with the low speed fuel pump.

Regardless of the design though, the purpose of all clutch actuating systems is to improve the driving experience by removing the need for manual clutch operation by the driver. Computer-controlled clutch actuating systems work particularly well in dual clutch systems where one clutch controls gear changes of even-numbered gear ratios, and a second clutch that controls gear changes of odd-numbered ratios.

P3921 Porsche Boxster Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine P3921 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 park switch indicates park with vehicle moving 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 park switch indicates park with vehicle moving.

Difficulty Level (Easy)

Repair Time (45 Min.)

Cost Prediction : $ 75-90

Common Causes of Porsche Boxster 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 ;

• EVAP canister or fuel tank leaks
• 1Camshaft Position Sensor circuit poor electrical connection
• Air fuel ratio (A/F) Sensor 1 Bank 1 circuit poor electrical connection
• Faulty Mass Air Flow (MAF) sensor

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 718
• 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 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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