P0D1AHybrid/EV Battery Pack Coolant Control Valve B Control Circuit/Open
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P0D1A flags an open or otherwise faulty drive circuit of coolant control valve B, a second actuator in the coolant loop of the hybrid or EV battery. Which physical valve gets the letter B, and what it switches, is up to the vehicle maker. No manufacturer documents P0D1A in a public bulletin or OBD table. The best documented analogue is valve A: Mercedes battery management reports its actuation as faulty or interrupted (LI83.30-P-061224), and CARB requires every electronic output used for battery heating or cooling to be checked for circuit faults. A broken wire, a corroded plug or an open valve coil are the usual findings. With the valve unusable the pack may run too warm or too cold, so charging and power can be limited. Shorts to ground or voltage are P0D1D and P0D1E.
- What you may notice
- Hybrid or EV system warning and MIL
- Reduced charging or drive power because battery temperature cannot be managed
- Likely causes
- LikelyBroken wire or corroded connector in the valve B drive circuit
- PossibleOpen coil or motor winding inside valve B
- RareFaulty output stage in the controlling module
- 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.