P0D1E code meaning
Hybrid/EV Battery Pack Coolant Control Valve B Control Circuit High
Powertrain system Generic code P0Dxx codes Check engine light
What P0D1E means
P0D1E is the short-to-voltage counterpart for coolant control valve B: the controller sees its drive line high at a moment when it should be low. P0D1E is not described in any public manufacturer document. For valve A, GM documents the matching test on the Chevrolet Volt 2011 and Cadillac ELR 2016: driver line 1 reads high while the valve should be stopped or moving forward, system voltage above 9 V or 10.2 V, 90 out of 100 checks, Type B with the lamp lit on the second trip. Because the check runs in the opposite direction of travel to the low test, the stored code already hints at which wire is affected. Pinched wires touching a supply line or a driver stage that will not switch off are the usual suspects. Battery temperature control falls back to a default. Short to ground is P0D1D, open circuit P0D1A.
P0D1E 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 P0D1E
- MIL after two trips (where the maker uses a two-trip code)
- Battery thermal management in fallback mode, charging or power limited
Common causes of P0D1E
- Most likelyValve B driver wire pinched against a supply line
- PossibleOutput stage in the controlling module stuck high
- Less likelyDamaged or contaminated connector bridging two pins
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 P0D1E means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 1E | The exact fault in that area. |
What to do next
- Note P0D1E 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 P0D1E
What does P0D1E mean?
P0D1E means "Hybrid/EV Battery Pack Coolant Control Valve B Control Circuit High". P0D1E is the short-to-voltage counterpart for coolant control valve B: the controller sees its drive line high at a moment when it should be low. It is a generic code, so it means the same on every make.
Is it safe to drive with P0D1E?
Drive gently and only to a workshop. With P0D1E the car can go into limp mode (reduced power) to protect itself.
Will P0D1E fail an emissions test?
Yes, it can. P0D1E 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 P0D1E to fix?
Difficulty: hard. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P0D1E clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.