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Powertrain

P2478

Code meaning and manufacturer information

OBD-II / DTC

Reference meaning

What does this code mean?

The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.

A code identifies a detected condition, not a part that must automatically be replaced.

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A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

Before replacing a part

Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.

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Manufacturer communications

2

Original wording in English

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TB011303 ↗

VOLKSWAGEN

Update Programming MIL ON, DTCs P050E, P2080, P244C and/or P2478 Stored in ECM Fault Memory

VOLKSWAGEN

Technical Bulletin (Update Programming for Stored in ECM Fault Memory issues): The MIL ON with NOx Sensor fault P2201 and/or Exhaust Gas Temperature Sensor faults P050E, P2080, P244C and/or P2478 stored in fault memory due to the Diagnostic strategy being to sensitive. The production solution to this issue was Improved software …

Check vehicle applicability

1

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

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MakeModelModel year
VolkswagenPASSAT ↗2012

Can I keep driving?

A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.