Powertrain, generic · Computer and auxiliary outputs

P06EF Engine Restart Performance

Check engine lightOn
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

P06EF concerns the automatic restart after the system itself has stopped the engine – stop-start or hybrid. The restart, by starter, reinforced stop-start starter or belt starter-generator, takes too long or fails. CARB does not count such a commanded shutdown as a stall. No manufacturer publishes the time limit. VW's Tiguan bulletins list P06EF together with P06E9 and trace both to dirt inside the starter; FCA fixes it on the 2019 Jeep Wrangler with engine-module software and lights the check engine light. Stop-start is then disabled. Besides the starter, a weak stop-start battery or fuel and ignition problems at restart can be the cause.

Likely causes

Starter or starter-generator worn, contacts intermittently open
Engine module software
Weak stop-start battery (AGM/EFB) or battery sensor
Fuel pressure or ignition at restart

Symptoms

  • Engine does not restart or restarts late after stop-start
  • Stop-start disabled
  • Check engine light (FCA)

Repair estimate

DifficultyMediumDIY possible
Parts and labour€50–900
Time0.3–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

starter motorstarter generatorbatteryengine control module

Related codes

P06E9P0615P0616P0617P0562

References: static.nhtsa.gov, static.nhtsa.gov, static.nhtsa.gov, law.cornell.edu.