P0D2B concerns the driver circuit of the control pilot indicator, a lamp or LED with which the vehicle signals the state of the pilot connection to the charging station. The code covers the lamp's own wiring, not the pilot signal itself. GM monitors it on the Chevrolet Volt and Cadillac ELR in two cases: a short to ground is detected while the LED is commanded on (12 bad readings out of 15), a short to battery or an open circuit while it is off and the cord is plugged in (40 out of 50), each sampled every 100 ms. The 2011 and 2012 Volt treat it as Type B with MIL after two trips; the 2016 ELR tables list One Trip Type A. Wiring damage, a failed LED or a bad connector are the likely causes. Charging itself usually continues. Faults of the pilot line are P0CF3 and P0CF4.
Medium severity. Can I keep driving?If the car is running normally, drive in moderation to a repair shop. If it loses power or another warning appears, do not continue.
Symptoms
- Indicator stays dark or lit regardless of charging state
- MIL, depending on model after one or two trips
Most likely causes
- Damaged wiring or loose connector to the indicator
- Failed indicator LED
- Faulty LED driver in the controlling module
What to check, in order
Start with the simplest. You can tick off each step.
Good to know
- Repair difficulty: medium
What each character of P0D2B means
- P: Powertrain: engine and transmission
- 0: Generic code: same on every make
- D: Subsystem depends on the code range
- 2B: Specific fault in that system
Frequently asked questions
Can I keep driving with code P0D2B?
If the car is running normally, drive in moderation to a repair shop. If it loses power or another warning appears, do not continue.
What causes code P0D2B?
The most common causes are: damaged wiring or loose connector to the indicator; failed indicator LED; faulty LED driver in the controlling module.
Related codes
- P0D2CCharge Status Indicator A Control Circuit/Open
- P0CF3Control Pilot Circuit/Open
- P0CF4Control Pilot Circuit Range/Performance
Sources
- gsi.ext.gm.com: 11OBDG01 HYBRID Diagnostics
- gsi.ext.gm.com: 12OBDG01A HYBRID Diagnostics
- gsi.ext.gm.com: 16OBDG01 Hybrid Diagnostics
Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.