OBD fault code library

Look up any P or U code to see what it means, what causes it, the parts involved and how it gets fixed.

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Fault codes

P1671 Issue in fuel pump valve (cylinder 6)

Volkswagen Injector Circuit High severity

P1672 Open or short circuit in coolant fan

Volkswagen Auxiliary Emissions Control High severity

P1674 Internal malfunction detected in Instrument cluster control module

Volkswagen Computer Output Circuit High severity

P1676 Internal malfunction detected in drive by wire (steering) module

Volkswagen Computer Output Circuit High severity

P1677 Internal malfunction detected in drive by wire (steering) module

Volkswagen Computer Output Circuit High severity

P1679 Internal malfunction detected in drive by wire (steering) module

Volkswagen Computer Output Circuit High severity

P1680 Limp mode active

Volkswagen Computer Output Circuit High severity

P1681 Not finished programming of ECM

Volkswagen Computer Output Circuit High severity

P1683 Internal malfunction detected in Airbag control module

Volkswagen Computer Output Circuit High severity

P1684 Internal malfunction detected in ECM

Volkswagen Computer Output Circuit High severity

P1686 Internal malfunction detected in ECM

Volkswagen Computer Output Circuit High severity

P1687 Internal malfunction detected in AC control module

Volkswagen Computer Output Circuit High severity

P1689 Internal malfunction detected in Central electronics control module

Volkswagen Computer Output Circuit High severity

P1690 MIL light issue

Volkswagen Computer Output Circuit High severity

P1691 Open circuit in MIL light

Volkswagen Computer Output Circuit High severity