B0257 Porsche 904 OBD Code

OBD/2 B0257 error code description and symptoms.

Intake Manifold Runner Control Malfunction (Stuck Open) The IMRC system is monitored for failure during continuous, key ON engine OFF or key ON engine running self-test. The test fails when the signal on the monitor pin is less than an expected calibrated range at closed throttle. IMRC monitor signal circuit shorted to PWR GND or SIG RTN Damaged IMRC actuator Damaged PCM An IMRCM PID reading approximately near 1 volt at closed throttle may indicate a fault.

As the engine heats up and combustion becomes easier and more complete, the PCM will command the idling control valve to increase the amount of air entering the engine to suit the changing conditions. However, when the load on the engine changes, say, when some electrical consumers or other systems are either turned on or off, the PCM adapts the signal voltage to the idle control valve to ensure that the idling speed remains stable, and at the RPM specified by the manufacturer.

B0257 Porsche 904 Error Code Repair Process :

The scent may B0257 signal oil or coolant leaking from their normally closed-loop systems, or it may indicate dangerous exhaust gases invading your car's interior. Car and truck exhaust contains toxic gases such B0257, so if the inside of your car exhaust pressure control valve high as if you were standing behind your car, get out and get it fixed. Fight the urge to take a little nap first. So sleepy. That's the carbon monoxide talking, friends. At least open a window on your way to the shop.

Difficulty Level (Soso)

Repair Time (30 Min.)

Cost Prediction : $ 35-120

Common Causes of Porsche 904 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 ;

• 1Camshaft Position Sensor circuit poor electrical connection
• Air fuel ratio (A/F) Sensor 1 Bank 1 harness is open or shorted
• Damaged camshaft position (CMP) sensor
• Three way catalyst converter Bank 1

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 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 964
• 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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