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.

Free on OBD DashX

Looking for real-world repair data?

OBD DashX shows which problems come with each code, how often they show up in other vehicles, and how to fix them — step by step.

Real-world fix data
How often it happens
Step-by-step repairs

Browse codes on OBD DashX No sign-up needed · available in 10 languages

Fault codes

P1997 Friction in camshaft higher than limits

Volkswagen Ignition System High severity

P1998 Friction in camshaft higher than limits

Volkswagen Ignition System High severity

P1600 Low voltage detected from battery

Audi Computer Output Circuit High severity

P2A0C /codes/dtcs/p2a0c

P1601 Issue with battery supply voltage relay

Audi Computer Output Circuit High severity

P1602 Low voltage detected from battery

Audi Computer Output Circuit High severity

P1604 Internal malfunction detected in ECM

Audi Computer Output Circuit High severity

P1605 Acceleration sensor malfunction

Audi Computer Output Circuit High severity

P1607 Communication error between vehicle speed signals and Instrument cluster (IC)

Audi Computer Output Circuit High severity

P1608 Steering angle sensor malfunction

Audi Computer Output Circuit High severity

P1610 Internal malfunction detected in ECM

Audi Computer Output Circuit High severity

P1611 Internal malfunction detected in Transmission Control Module

Audi Computer Output Circuit High severity

P1613 Open or short detected in MIL light circuit

Audi Computer Output Circuit High severity

P1614 Internal malfunction detected in Transmission Control Module

Audi Computer Output Circuit High severity

P1615 Issue in Engine Oil Temperature sensor

Audi Fuel and Air Metering High severity