OBD Guide
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P06ED

Engine RPM Output Circuit Low

P06ED is an OBD-II diagnostic trouble code meaning: Engine RPM Output Circuit Low. Common causes: rpm output wire short to ground, faulty load (tachometer, automatic transmission module). Estimated repair cost: $11–222.

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$11–222 (est.)

Symptoms

  • Check Engine light on
  • Tachometer shows zero or unrealistic rpm
  • Unstable operation of the automatic transmission
  • Incorrect operation of cruise control
  • Incorrect readings of external instruments (tachograph, etc.)

Causes

  • RPM output wire short to ground
  • Faulty load (tachometer, automatic transmission module)
  • Broken or damaged wire
  • Internal fault in the ECU output stage
  • Output overload due to multiple connected devices

How to Fix

  1. Identify the RPM output on the ECU connector using the wiring diagram
  2. Measure the output voltage with the engine running
  3. Disconnect the load (tachometer connector, gearbox) and check the change in signal level
  4. Check the output wire for a short to ground.
  5. Measure the load created by each consumer
  6. If external circuits are in good working order, diagnose the ECU

Related codes

P06EEP0335P0336P0500U0100

Error P06ED by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P06ED code mean?

P06ED is an OBD-II diagnostic trouble code that indicates: Engine RPM Output Circuit Low

What causes a P06ED error code?

The most common causes of P06ED include: RPM output wire short to ground; Faulty load (tachometer, automatic transmission module); Broken or damaged wire; Internal fault in the ECU output stage.

How do I fix a P06ED diagnostic trouble code?

To fix P06ED: Identify the RPM output on the ECU connector using the wiring diagram. Measure the output voltage with the engine running. Disconnect the load (tachometer connector, gearbox) and check the change in signal level. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P06ED?

Do not drive — repair immediately

How much does it cost to fix P06ED?

The estimated repair cost for P06ED is $11–222. Actual cost depends on your vehicle, location, and labor rates.

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