OBD-II code · Powertrain (generic, extended)
P2602 Coolant Pump Control Circuit Open
The ECU detects an open circuit on the electric coolant pump control line. Without pump control the engine cannot actively manage warm-up and cool-down phases.
Is it safe to drive with P2602?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyPump motor open
- PossibleDrive line open
- Less likelyPin pushed back out of connector body
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2.5 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Electric Coolant Pump, Coolant Pump Wiring
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.