OBD-II code · Powertrain (generic)
P00B7 Engine Coolant Flow Low/Performance
Coolant flow through the engine is below the expected level. Risk of overheating.
Is it safe to drive with P00B7?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyWater pump impeller broken or worn
- PossibleCoolant passage blocked
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 2–8 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Water Pump, Coolant Lines, Thermostat
Related codes
- P00B4Radiator Coolant Temperature Sensor Circuit High
- P00B5Radiator Coolant Temperature Sensor Circuit Intermittent/Erratic
- P00B6Radiator Coolant Temperature/Engine Coolant Temperature Correlation
- P00B8MAP - Mass or Volume Air Flow Correlation Bank 2
- P00B9Low Pressure Fuel System Pressure - Too Low. Low Ambient Temperature
- P00BALow Fuel Pressure - Forced Limited Power
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.