B0257 Porsche 964 OBD Code

OBD/2 B0257 error code description and symptoms.

The Throttle Position sensor signals the Engine Control Module as to the current position of the engine throttle valve.
The current throttle valve opening is based on the driver's input from the gas pedal. The ECM uses the information from this sensor to help calculate fuel delivery and spark timing.

On some transmissions, such as automated manual transmissions or automatic transmissions with manual mode, the GSP switch lets the TCM know whether or not the driver has selected automatic or manual function. On manual transmissions, the GSP switch informs the TCM which gear the driver is selecting, and may function as a neutral safety switch, depending on system design. The TCM also uses the gate select position switch to monitor transmission operation. For example, if the driver selects manual mode and selects 3rd gear on an automatic transmission, the TCM may monitor speed sensors to detect clutch and brake slippage.

B0257 Porsche 964 Error Code Repair Process :

The rule of B0257 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 exhaust pressure control valve high. Likewise, overriding the OBD B0257 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.

Difficulty Level (Expert)

Repair Time (60 Min.)

Cost Prediction : $ 80-170

Common Causes of Porsche 964 B0257 OBD2 Code

A common cause of code B0257 is the failure of Exhaust Pressure Control Valve High, but there are several other possible causes as well, such as ;

• Damaged ECM
• Faulty Fuel injector
• Faulty select solenoid
• Intake air leaks

B0257 is a kind of Body Trouble Code Auto body problems aren't always easy to spot. Diagnosing auto body problems sometimes requires a little know-how. In this section you'll find articles dedicated to teaching you how to diagnose auto body problems.

B0257 code for other Porsche cars

You can view according B0257 DTC for your car model. We selected several models to see obd2 solutions click and view it.

• B0257 Porsche 1300
• B0257 Porsche 3400
• B0257 Porsche 356
• B0257 Porsche 550
• B0257 Porsche 718
• B0257 Porsche 804
• B0257 Porsche 901
• B0257 Porsche 904
• B0257 Porsche 906
• B0257 Porsche 907
• B0257 Porsche 908
• B0257 Porsche 910
• B0257 Porsche 911
• B0257 Porsche 911 Type 991
• B0257 Porsche 911 Type 996
• B0257 Porsche 911 Type 997
• B0257 Porsche 912
• B0257 Porsche 914
• B0257 Porsche 917
• B0257 Porsche 924
• B0257 Porsche 928
• B0257 Porsche 930
• B0257 Porsche 931
• B0257 Porsche 935
• B0257 Porsche 936
• B0257 Porsche 937
• B0257 Porsche 944
• B0257 Porsche 959
• B0257 Porsche 962
• B0257 Porsche 965
• B0257 Porsche 968
• B0257 Porsche 986
• B0257 Porsche 993
• B0257 Porsche 996
• B0257 Porsche Boxster
• B0257 Porsche Boxster Type 981
• B0257 Porsche Boxster Type 986
• B0257 Porsche Boxster Type 987
• B0257 Porsche Carrera Gt
• B0257 Porsche Cayenne
• B0257 Porsche Cayenne Type 92a
• B0257 Porsche Cayenne Type 9pa
• B0257 Porsche Cayman
• B0257 Porsche Cayman Type 718
• B0257 Porsche Cayman Type 981
• B0257 Porsche Cayman Type 987
• B0257 Porsche Coupe
• B0257 Porsche Dp
• B0257 Porsche Gt
• B0257 Porsche Gt2
• B0257 Porsche Gt3
• B0257 Porsche Karisma
• B0257 Porsche Kremer
• B0257 Porsche Macan Type 95b
• B0257 Porsche Mega
• B0257 Porsche Panamera Type 970
• B0257 Porsche Panamericana
• B0257 Porsche Rsk
• B0257 Porsche Tapiro

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