Charging & electrical supply fault codes
19 VAG and OBD-II codes covering charging and electrical supply, each with what it means in plain English and how urgent it is.
| Code | Definition | Severity |
|---|---|---|
00292 | Hydraulic Energy (Pressure) Supply - Pressure Level Outside Specification / Too Low (accumulator / charging) | Investigate soon |
01117 | Alternator (Terminal DF) Load Signal - Malfunction | Investigate soon |
01209 | Alternator Speed (Terminal W) Signal - Malfunction | Investigate soon |
18010 (P1602) | Power Supply B+ Terminal 30: Voltage too Low | Investigate soon |
B1015 | Igniter, Pyrotechnic Battery Isolation / Safety Battery Terminal (Pyrofuse, N253) | Safety system |
C100D | Left Parking Brake Motor (V282) Voltage Supply: Electrical Fault / Short to B+ (EPB J540) | Do not keep driving |
C100E | Right Parking Brake Motor (V283) Voltage Supply: Electrical Fault / Short to B+ (EPB J540) | Do not keep driving |
P06B0 | Sensor Power Supply A Circuit/Open | Investigate soon |
P06B2 | Sensor Power Supply A Circuit High | Investigate soon |
P0A7F | Hybrid/EV Battery Pack A Deterioration | Investigate soon |
P1503 | Load Signal from Alternator (Terminal DF) - Range/Performance / Implausible Signal | Investigate soon |
P1602 | Power Supply (B+) Terminal 30 (T30, Battery) - Low Voltage | Investigate soon |
P1632 | Accelerator Pedal Position Sensor 1 (G79) - Power Supply Malfunction | Investigate soon |
U0111 | Lost Communication With Battery Energy Control Module A | Investigate soon |
U0112 | Lost Communication With Battery Energy Control Module B | Investigate soon |
U0312 | Software Incompatibility With Battery Energy Control Module 'A' | Investigate soon |
U0313 | Software Incompatibility With Battery Energy Control Module 'B' | Investigate soon |
U0412 | Invalid Data Received From Battery Energy Control Module 'A' | Investigate soon |
U0413 | Invalid Data Received From Battery Energy Control Module 'B' | Investigate soon |
Reading the code is the easy part
A code names the circuit that complained. What tells you why is watching the sensor behind it while the engine runs — and that is where a code reader stops and a diagnostic tool starts.
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