C1378 Porsche 964 OBD Code

OBD/2 C1378 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.

In most cases, the TCM is integrated into a single housing with the PCM. Nevertheless, the section of the module which controls (automatic) transmission function may be powered up separately. In any case, the TCM is typically powered using switched (only present with the ignition switch in the ON, start, or run position) voltage. This circuit is normally equipped with a fuse, fusible link, and/or a relay. Frequently, the PCM and TCM are powered using the same relay albeit by separate circuits. Access to a reliable vehicle information source will yield necessary details of the TCM power circuit for the specific vehicle in question.

C1378 Porsche 964 Error Code Repair Process :

OBD C1378 code and tailpipe testing are two different approaches to identify vehicles in need of repair. The OBD system looks for broken or malfunctioning emissions control components and scp (j1850) invalid or missing data for primary id, while tailpipe tests sample a vehicle's exhaust to see if it is above or below certain prescribed limits. Given the robust nature of today's emissions control components, it is entirely possible for an individual component to C1378 malfunction without leading to an immediate increase in emissions at the tailpipe. In such cases, other components (like the catalyst) can temporarily compensate for the part that is broken however, these other components can only do double duty for so long before they, too, begin to malfunction. In addition, OBD also monitors for C1378 and other malfunctions in the fuel system problems that traditional tailpipe tests were not designed to identify. Most state and local areas also include a gas cap pressure test as part of an emission inspection.

Difficulty Level (Soso)

Repair Time (30 Min.)

Cost Prediction : $ 40-60

Common Causes of Porsche 964 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 ;

• Damaged ECM
• Exhaust tube
• Faulty Intake Valve Timing Control Solenoid Valve
• Intake air leaks

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 944
• C1378 Porsche 959
• C1378 Porsche 962
• 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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