P0D1D code meaning
Hybrid/EV Battery Pack Coolant Control Valve B Control Circuit Low
Powertrain system Generic code P0Dxx codes Check engine light
What P0D1D means
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.
P0D1D at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyHard
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0D1D
- MIL after two trips (where the maker uses a two-trip code)
- Battery cooling or heating restricted, charging or power limited
Common causes of P0D1D
- Most likelyValve B driver wire chafed and shorted to ground
- PossibleMoisture or corrosion in the valve connector
- Less likelyInternal short in the valve motor
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Hv battery pack coolant valve bWiring harnessBms
What each part of P0D1D means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 1D | The exact fault in that area. |
What to do next
- Note P0D1D and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P0D1D
What does P0D1D mean?
P0D1D means "Hybrid/EV Battery Pack Coolant Control Valve B Control Circuit Low". P0D1D reports that the drive line of coolant control valve B reads too low, which normally means a short to ground. It is a generic code, so it means the same on every make.
Is it safe to drive with P0D1D?
Drive gently and only to a workshop. With P0D1D the car can go into limp mode (reduced power) to protect itself.
Will P0D1D fail an emissions test?
Yes, it can. P0D1D is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P0D1D to fix?
Difficulty: hard. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P0D1D clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.