SpareRadar OBD-II Code Lookup

P12A4

Set by the manufacturer, so it means different things on different makes. 2 makes in the table below.

More codes than this one? Paste your whole scan
What P12A4 means, by make 2 makes
  • Audi Fuel Rail Pump Control Valve Stuck Closed; Fuel trim activity .90 to 1.15; Pressure control activity; < -6 MPa; System Deviation < 16.38 MPa
  • Volkswagen Fuel Rail Pump Control Valve Stuck Closed; Fuel trim activity .90 to 1.15; Pressure control activity; < -6 MPa; System Deviation < 16.38 MPa

Each line is that manufacturer's own meaning for P12A4. They are genuinely different faults, not rewordings of one, so a meaning listed against one make says nothing about the others. If your make is not listed, we do not hold it - your manufacturer's service information is the authority.

Code structure P12A4
P
Powertrain
engine, transmission and emissions
1
Manufacturer-specific
Defined by the vehicle manufacturer, so the meaning varies between makes.
2
A
4
Fault index
identifies the specific fault
Powertrain Manufacturer-specific
Nearby codes in the P1 range
P129E manufacturer-specific, 4 makes P12A0 manufacturer-specific, 2 makes P12A1 manufacturer-specific, 2 makes P12A2 manufacturer-specific, 2 makes P12A6 manufacturer-specific, 1 make P1300 manufacturer-specific, 22 makes P1301 manufacturer-specific, 11 makes P1302 manufacturer-specific, 9 makes

Manufacturer code meanings from kierandrewett/obd (b56a07a), used under the MIT licence. Copyright (c) Kieran Drewett. SpareRadar is not affiliated with the dataset's authors.