OBD Guide
ENFRDEESPT

P06EF

Engine Restart Performance

P06EF is an OBD-II diagnostic trouble code meaning: Engine Restart Performance. Common causes: battery wear (starter or auxiliary agm), worn or faulty starter (with frequent cycles). Estimated repair cost: $17–222.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–222 (est.)

Symptoms

  • Check Engine light on
  • Delay or refusal to restart the engine by the start-stop system
  • Jerking on restart
  • Engine does not restart or requires several attempts
  • The start-stop system is switched off automatically

Causes

  • Battery wear (starter or auxiliary AGM)
  • Worn or faulty starter (with frequent cycles)
  • Fuel injection system malfunction
  • Malfunction of sensors (crankshaft, oil pressure)
  • Software error in the start-stop system control algorithm

How to Fix

  1. Check the condition of the battery with a load test (with frequent start-stop cycles, the AGM battery wears out faster)
  2. Read extended diagnostic data if restart fails
  3. Check the operation of the starter and the current consumption when starting
  4. Check fuel pressure and injection system operation
  5. Make sure the crankshaft position sensor is working properly
  6. Update the ECU firmware if official updates are available

Related codes

P06E9P0615P0616P06F4U0073

Error P06EF by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P06EF code mean?

P06EF is an OBD-II diagnostic trouble code that indicates: Engine Restart Performance

What causes a P06EF error code?

The most common causes of P06EF include: Battery wear (starter or auxiliary AGM); Worn or faulty starter (with frequent cycles); Fuel injection system malfunction; Malfunction of sensors (crankshaft, oil pressure).

How do I fix a P06EF diagnostic trouble code?

To fix P06EF: Check the condition of the battery with a load test (with frequent start-stop cycles, the AGM battery wears out faster). Read extended diagnostic data if restart fails. Check the operation of the starter and the current consumption when starting. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P06EF?

Yes, but get it checked soon

How much does it cost to fix P06EF?

The estimated repair cost for P06EF is $17–222. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat