OBD-II code · Powertrain (generic, extended)
P26D3 Engine Coolant Pump Supply Voltage Circuit
The dedicated supply voltage line to the coolant pump module is faulty. Pump cannot operate without battery feed.
Is it safe to drive with P26D3?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyBlown fuse on supply line
- PossibleHigh-resistance contact in supply harness
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–2.5 h
- Emissions test
- Usually unaffected
- Parts involved
- Smart Coolant Pump Module, Supply Circuit
Related codes
- P26D0Engine Coolant Pump Control Module System Voltage Low
- P26D1Engine Coolant Pump Control Module System Voltage High
- P26D2Engine Coolant Pump Control Module Over Temperature
- P26D4Engine Coolant Pump Supply Voltage Circuit Low
- P26D5Engine Coolant Pump Supply Voltage Circuit High
- P26D6Engine Coolant Pump Clutch Control Circuit / Open
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.