P0D26 means the charger's high-voltage bus did not come up to battery voltage within the allowed precharge time. GM's Volt 2011 to 2015 and ELR 2014 to 2016 require the bus to sit within 5 % of pack voltage for 0.25 s before 10 s have passed; the 2016 and 2017 Volt allow only 0.700 s to reach 95 % (later 95 to 105 %); all are One Trip Type A. Mitsubishi's Outlander PHEV looks at the charger's own capacitor, which must charge to 120 or 240 V within 45 s, otherwise charging stops. Bulletin PIP4905E links P0D26 on the Volt and ELR to no charging and asks for HPCM2 software, then a check of the proximity signal and charge port for water or corrosion; on the Bolt EV (18-NA-225) it comes with P0C78 when the fuse in the manual disconnect has opened. The main battery precharge is P0C78.
High severity. Can I keep driving?If the car still runs, drive as little as possible and go to a specialized repair shop. Do not touch the orange cables: they carry high voltage.
Symptoms
- Vehicle does not charge on 120 V or 240 V
- MIL on at once
- With a blown disconnect fuse, loss of propulsion
Most likely causes
- Open precharge resistor, fuse or contactor in the precharge path
- Blown fuse in the manual service disconnect (Bolt EV bulletin)
- Erratic proximity signal from a wet or corroded charge port
- Outdated hybrid control module software
What to check, in order
Start with the simplest. You can tick off each step.
What each character of P0D26 means
- P: Powertrain: engine and transmission
- 0: Generic code: same on every make
- D: Subsystem depends on the code range
- 26: Specific fault in that system
Frequently asked questions
Can I keep driving with code P0D26?
If the car still runs, drive as little as possible and go to a specialized repair shop. Do not touch the orange cables: they carry high voltage.
What causes code P0D26?
The most common causes are: open precharge resistor, fuse or contactor in the precharge path; blown fuse in the manual service disconnect (Bolt EV bulletin); erratic proximity signal from a wet or corroded charge port.
Related codes
- P0D25Battery Charger System Precharge Time Too Short
- P0C78Hybrid/EV Battery System Precharge Time Too Long
- P0D23Battery Charger A Output Shorted
Sources
- gsi.ext.gm.com: 12OBDG01A HYBRID Diagnostics
- gsi.ext.gm.com: 16OBDG01 Hybrid Diagnostics
- gsi.ext.gm.com: 17OBDG01 Hybrid Diagnostics
- mitsubishitechinfo.com: M154950380001900USA
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.