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TuningBot DTC Database · v4.37.14

P1478 Diagnostic Trouble Code (6 interpretations)

6 manufacturer-specific interpretations across 5 manufacturers in the TuningBot DTC database.

P · PowertrainEngineOBD2

BMW

1 interpretation
P1478
Throttle valve adaptation - mechanical stop not adapted, bank 1 BMW · engine Data confidence 62%

The control module detected a fault associated with the Throttle valve adaptation - mechanical stop not adapted, bank 1 circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by BMW.

Possible causes

  • Wiring
  • throttle valve adaptation
  • throttle motor position sensor
  • ECM

Chrysler

1 interpretation
P1478
Battery temperature sensor Chrysler · battery Data confidence 62%

The control module detected a fault associated with the Battery temperature sensor circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Chrysler.

Possible causes

  • Wiring
  • ambient/battery temperature sensor

Jeep

1 interpretation
P1478
Battery Temp Sensor Voltage Out Of Limit Jeep · engine Data confidence 62%

The control module detected a fault associated with the Battery Temp Sensor Voltage Out Of Limit circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Jeep.

Recommended checks

  • Perform a full module scan
  • Review freeze-frame and occurrence data
  • Confirm the exact vehicle, ECU and software context
  • Inspect relevant wiring and connectors
  • Check applicable OEM service information

MINI

1 interpretation
P1478
Evaporative Emissions System Leak Detected MINI · emissions Data confidence 62%

The control module detected a condition consistent with a leak affecting the Evaporative Emissions System. This is the manufacturer-specific definition used by MINI.

VAG

2 interpretations
P1478
EVAP Control System LDP Clamped Tube Detected VAG · emissions Data confidence 62%

The control module detected a fault associated with the EVAP Control System LDP Clamped Tube Detected circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Audi.

Possible causes

Hose blockage

Applies to Audi
P1478
EVAP Control System LDP Clamped Tube Detected VAG · emissions Data confidence 80%

The control module detected a fault associated with the EVAP Control System LDP Clamped Tube Detected 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.

Recommended checks

  • Perform a full module scan
  • Review freeze-frame and occurrence data
  • Compare commanded and measured values
  • Check applicable OEM service information
Applies to Volkswagen

Related and nearby codes

How to read P1478

P

Powertrain: engine, transmission and driveline systems.

1

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

478

Specific fault index within the subsystem.

Frequently asked questions about P1478

What does P1478 mean?

Diagnostic Trouble Code (6 interpretations). The control module detected a fault associated with the Throttle valve adaptation - mechanical stop not adapted, bank 1 circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by BMW.

Is P1478 generic or manufacturer-specific?

P1478 is a manufacturer-specific code. In this database it is documented for: BMW, Chrysler, Jeep, MINI, VAG. The same number can mean something different on other brands.

Can TuningBot remove P1478 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

ECU tuningDyno-tested results by model and engine See the results →

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