What it means
Coolant pump E reports a stuck/stalled condition. Coolant circulation through the affected loop cannot be commanded reliably.
At a glance
- Usually lights the check-engine light
- The engine or gearbox may go into limp mode
How it works
Coolant pump E circulates coolant through its assigned cooling loop. The controller monitors whether the pump turns when commanded and whether it reports movement. This code sets when pump E is detected as stuck or stalled, so coolant flow through that loop may stop.
Common causes
Most likely first.
- Pump motor or driver fault
- Wiring or connector fault
Symptoms
- Check-engine light
- Coolant temperature warning or rising temperature gauge
- Reduced engine power
How to diagnose it
- Review freeze-frame data and live coolant temperatures to establish whether the stall occurred with a pump command or rising temperature.
- With the engine cool, inspect pump E's connector, wiring, and ground for disconnection, damage, or corrosion.
- Check coolant level and look for leaks or obstructions in the pump E loop that could impede circulation.
- Command pump E with a scan tool and listen or feel for operation only where safely accessible, while observing its feedback.
- Test pump supply, ground, and control circuits using the manufacturer's wiring diagram and procedure.
- If the circuit is intact but the pump does not turn, test the pump motor and driver against the manufacturer's specification.
Common fixes
- Reconnect or repair damaged pump E wiring and terminals.
- Restore coolant level and repair leaks or flow obstructions in the affected loop.
- Replace pump E if it remains stalled with correct circuit power and control.
- Repair a failed control driver if testing isolates the fault there.
Can I keep driving?
Do not continue driving if the temperature rises or a coolant warning appears; stop safely and switch off the engine to prevent overheating. Even with normal temperature, keep travel short and gentle because the pump may not be circulating coolant.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.