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TuningBot DTC Database · v4.37.15

P1338 VAG - Diagnostic Trouble Code (2 interpretations)

Manufacturer-specific interpretation for VAG. All interpretations of P1338

P · PowertrainEngineOBD2

What P1338 means

P1338
Camshaft position (CMP) sensor, Bank 1 - open circuit/short to positive VAG · engine Data confidence 62%

The control module detected an interruption (open circuit) in the Camshaft position (CMP) sensor, Bank 1 circuit, so the expected electrical continuity was not present. This is the manufacturer-specific definition used by Audi.

Possible causes

  • Wiring open circuit/short to positive
  • CMP sensor
Applies to Audi
P1338
Camshaft Position Sensor (G40) VAG · engine Data confidence 80%

The control module detected a fault associated with the Camshaft Position Sensor (G40) circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Volkswagen. Volkswagen Group tools also report it as fault code 17746. Documented stored variants include: Open or Short to Plus. Documented across Volkswagen Group applications (Audi, SEAT and Škoda included).

Symptoms

Malfunction Indicator Lamp (MIL) active

Possible causes

  • Camshaft Position Sensor (G40) faulty
  • Wiring/Connectors from/to Camshaft Position Sensor (G40) faulty

Recommended checks

  • Check Camshaft Adjustment
  • Check Camshaft Position Sensor (G40)
  • Check Wiring/Connectors from/to Camshaft Position Sensor (G40)
Applies to Volkswagen

Related and nearby codes

How to read P1338

P

Powertrain: engine, transmission and driveline systems.

1

Manufacturer-defined range: the meaning can differ between brands.

338

Specific fault index within the subsystem.

Frequently asked questions about P1338

What does P1338 mean?

Diagnostic Trouble Code (2 interpretations). The control module detected an interruption (open circuit) in the Camshaft position (CMP) sensor, Bank 1 circuit, so the expected electrical continuity was not present. This is the manufacturer-specific definition used by Audi.

Is P1338 generic or manufacturer-specific?

P1338 is a manufacturer-specific code. In this database it is documented for: VAG. The same number can mean something different on other brands.

Can TuningBot remove P1338 at file level?

If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry. Checksum correction is not included: it is a separate, optional service. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.

Other file services

ECU tuningStage 1 dyno results for VAG engines See the results →

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