Jeep
Engine restart performance: auto stop-start failed to restart the engine. Common on Cherokee; FCA PCM updates. Check 12V battery health first.
P06EF fault code: what it means
P06EF: Engine restart performance: auto stop-start failed to restart the engine. Common on Cherokee; FCA PCM updates. Check 12V battery health first.
Usual causes, most likely first
- weak 12V or auxiliary battery
- PCM software
- starter motor
- battery sensor
P06EF by make
What the repair usually costs
- Starter motor replace (small / medium car)NZ$500–NZ$970 · A$470–A$930
- Starter motor replace (SUV / ute / European)NZ$780–NZ$1,850 · A$750–A$1,780
- Hybrid battery health test (scan and load test)NZ$70–NZ$170 · A$80–A$180
- Hybrid 12 V auxiliary battery (Aqua / Prius C / Axio, S34B20R)NZ$330–NZ$510 · A$310–A$500
Not sure what P06EF means on your car? Ask Credov.
Before you clear it
Write the code down or photograph the scanner first. A code that comes straight back after clearing points to a fault that is still there. A car whose codes were cleared just before you arrived may be hiding one: the scanner's readiness monitors show "not ready" for a while after codes are cleared.
Researched by Credov from manufacturer and workshop sources. A fault code points to where a fault may be; a workshop confirms it with a diagnosis. Browse all fault codes.