C1378 Porsche 944 OBD Code

OBD/2 C1378 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.

Some systems require that the actuator has an adequate supply of brake fluid. Low brake fluid levels can mimic the symptoms of code C1378, so consult the manual to locate the brake fluid reservoir. Bear in mind that a low fluid level can set code C1378 on some applications, so make sure that on fluid operated systems the fluid level is up to the mark before starting an electrical diagnosis.

C1378 Porsche 944 Error Code Repair Process :

If your scp (j1850) invalid or missing data for primary id 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 C1378 and engine control unit are in charge of monitoring a bunch of different scp (j1850) invalid or missing data for primary id, and if they get a reading that's a little out of whack, up pops the check engine light.

Difficulty Level (Soso)

Repair Time (50 Min.)

Cost Prediction : $ 40-75

Common Causes of Porsche 944 C1378 OBD2 Code

A common cause of code C1378 is the failure of SCP (J1850) Invalid or Missing Data for Primary Id, 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
• Fuel Injectors circuit poor electrical connection
• Continuous oil flow to the VCT piston chamber

C1378 is a kind of Chassis Trouble Code Diagnosing chassis noises can be one of the most frustrating problems technicians face. Fortunately, manufacturers have engineered noise, vibration and harshness (NVH) diagnostic techniques and equipment to find the source of the noise.

C1378 code for other Porsche cars

You can view according C1378 DTC for your car model. We selected several models to see obd2 solutions click and view it.

• C1378 Porsche 1300
• C1378 Porsche 3400
• C1378 Porsche 356
• C1378 Porsche 550
• C1378 Porsche 718
• C1378 Porsche 804
• C1378 Porsche 901
• C1378 Porsche 904
• C1378 Porsche 906
• C1378 Porsche 907
• C1378 Porsche 908
• C1378 Porsche 910
• C1378 Porsche 911
• C1378 Porsche 911 Type 991
• C1378 Porsche 911 Type 996
• C1378 Porsche 911 Type 997
• C1378 Porsche 912
• C1378 Porsche 914
• C1378 Porsche 917
• C1378 Porsche 924
• C1378 Porsche 928
• C1378 Porsche 930
• C1378 Porsche 931
• C1378 Porsche 935
• C1378 Porsche 936
• C1378 Porsche 937
• C1378 Porsche 959
• C1378 Porsche 962
• C1378 Porsche 964
• C1378 Porsche 965
• C1378 Porsche 968
• C1378 Porsche 986
• C1378 Porsche 993
• C1378 Porsche 996
• C1378 Porsche Boxster
• C1378 Porsche Boxster Type 981
• C1378 Porsche Boxster Type 986
• C1378 Porsche Boxster Type 987
• C1378 Porsche Carrera Gt
• C1378 Porsche Cayenne
• C1378 Porsche Cayenne Type 92a
• C1378 Porsche Cayenne Type 9pa
• C1378 Porsche Cayman
• C1378 Porsche Cayman Type 718
• C1378 Porsche Cayman Type 981
• C1378 Porsche Cayman Type 987
• C1378 Porsche Coupe
• C1378 Porsche Dp
• C1378 Porsche Gt
• C1378 Porsche Gt2
• C1378 Porsche Gt3
• C1378 Porsche Karisma
• C1378 Porsche Kremer
• C1378 Porsche Macan Type 95b
• C1378 Porsche Mega
• C1378 Porsche Panamera Type 970
• C1378 Porsche Panamericana
• C1378 Porsche Rsk
• C1378 Porsche Tapiro

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