P0D1DHybrid/EV Battery Pack Coolant Control Valve B Control Circuit Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P0D1D reports that the drive line of coolant control valve B reads too low, which normally means a short to ground. No manufacturer publishes P0D1D itself. The closest documented test is GM's check of valve A in the 2011 Chevrolet Volt and the 2016 Cadillac ELR: the motor-driven valve has two driver lines, and a low reading on line 1 while the valve should run in reverse, with system voltage above 9 V or 10.2 V, sets the code after 90 failed samples out of 100; it is Type B, which lights the MIL only on the second trip. A comparable logic is to be expected for B. Typical findings are a wire chafed through to the body, water in a connector or an internal short in the valve motor. While active, the valve stays where it is. Short to voltage is P0D1E, open circuit P0D1A.
- What you may notice
- MIL after two trips (where the maker uses a two-trip code)
- Battery cooling or heating restricted, charging or power limited
- Likely causes
- LikelyValve B driver wire chafed and shorted to ground
- PossibleMoisture or corrosion in the valve connector
- RareInternal short in the valve motor
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €80 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.