P1F18
Hybrid/EV Battery Pack Coolant Pump Enable Circuit
P1F18 is an OBD-II diagnostic trouble code meaning: Hybrid/EV Battery Pack Coolant Pump Enable Circuit. Common causes: open or short circuit in the pump circuit, pump solenoid valve malfunction. Estimated repair cost: $56–167.
Symptoms
- Reduced vehicle power
- Battery overheat warning on instrument panel
- Increased noise from the cooling pump
- Reduced electric vehicle range
- Check Engine Light Illuminates
Causes
- Open or short circuit in the pump circuit
- Pump solenoid valve malfunction
- Pump control relay problems
- Battery control unit malfunction
- Mechanical failure of the cooling pump
How to Fix
- Check the pump circuit fuses and relays
- Diagnose the integrity of the wiring harness
- Check the functionality of the cooling pump
- Scan the battery control unit for errors
- Replace pump or control circuit components as necessary
Related codes
FAQ
What does the P1F18 code mean?
P1F18 is an OBD-II diagnostic trouble code that indicates: Hybrid/EV Battery Pack Coolant Pump Enable Circuit
What causes a P1F18 error code?
The most common causes of P1F18 include: Open or short circuit in the pump circuit; Pump solenoid valve malfunction; Pump control relay problems; Battery control unit malfunction.
How do I fix a P1F18 diagnostic trouble code?
To fix P1F18: Check the pump circuit fuses and relays. Diagnose the integrity of the wiring harness. Check the functionality of the cooling pump. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1F18?
Limited driving only, diagnose soon
How much does it cost to fix P1F18?
The estimated repair cost for P1F18 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat