The control module detected a fault associated with the #8 MF Signal Line Short circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Hyundai.
TuningBot DTC Database · v4.37.14
P1338 Diagnostic Trouble Code (6 interpretations)
6 manufacturer-specific interpretations across 3 manufacturers in the TuningBot DTC database.
Hyundai
1 interpretation
PSA
3 interpretationsThe stored code identifies a fault of the Misfiring fault on cylinders 2. Documented for the Bosch MED 17.4.x engine ECU (EP6 THP family) on Peugeot applications; the same PSA control units are also fitted to Citroën models. PSA documentation does not characterise the failure mode further.
The stored code identifies a fault of the Fault. Documented for the Bosch MEV17.4 engine ECU (EP6 1.6 VTi) on Peugeot applications; the same PSA control units are also fitted to Citroën models. PSA documentation does not characterise the failure mode further.
The stored code identifies a fault of the High combustion misfiring on cylinder 2. Documented for the Magneti Marelli MM6KP engine ECU (EW7A/EW10A) on Peugeot applications; the same PSA control units are also fitted to Citroën models. PSA documentation does not characterise the failure mode further.
VAG
2 interpretationsThe 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
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)
Related and nearby codes
How to read P1338
Powertrain: engine, transmission and driveline systems.
Manufacturer-defined range: the meaning can differ between brands.
Specific fault index within the subsystem.
Frequently asked questions about P1338
What does P1338 mean?
Diagnostic Trouble Code (6 interpretations). The control module detected a fault associated with the #8 MF Signal Line Short circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Hyundai.
Is P1338 generic or manufacturer-specific?
P1338 is a manufacturer-specific code. In this database it is documented for: Hyundai, PSA, 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 and, where the ECU needs it, corrects the checksum too. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.
Other file services
Understand the system behind this code: Diagnostic Strategy and DTC Logic
