OBD Guide
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P06D2

Sensor Reference Voltage E Circuit/Open

P06D2 is an OBD-II diagnostic trouble code meaning: Sensor Reference Voltage E Circuit/Open. Common causes: open circuit 5 v reference wire e, short circuit in the reference voltage circuit to ground. Estimated repair cost: $17–889.

Severity
🔴 High
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–889 (est.)

Symptoms

  • Check Engine Light with Multiple Sensor Error Codes
  • Unstable engine operation
  • Incorrect readings from MAP, TPS or other sensors
  • Engine transition to emergency mode
  • Deterioration of acceleration dynamics

Causes

  • Open circuit 5 V reference wire E
  • Short circuit in the reference voltage circuit to ground
  • Malfunction of one of the sensors on circuit E, causing an open circuit
  • Corrosion of wiring connectors
  • Internal ECU fault

How to Fix

  1. Read all error codes - with P06D2 there are usually additional sensor codes present
  2. Define a list of sensors connected to the reference voltage circuit E
  3. Check the 5 V voltage at the sensor connectors with the ignition on
  4. Disconnect sensors one at a time to detect a short circuit in the circuit
  5. Check the integrity of the wiring from the ECU to each sensor
  6. If the wiring is in good condition, diagnose the ECU.

Related codes

P06D3P06D4P06D5P0641P0651

Error P06D2 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P06D2 code mean?

P06D2 is an OBD-II diagnostic trouble code that indicates: Sensor Reference Voltage E Circuit/Open

What causes a P06D2 error code?

The most common causes of P06D2 include: Open circuit 5 V reference wire E; Short circuit in the reference voltage circuit to ground; Malfunction of one of the sensors on circuit E, causing an open circuit; Corrosion of wiring connectors.

How do I fix a P06D2 diagnostic trouble code?

To fix P06D2: Read all error codes - with P06D2 there are usually additional sensor codes present. Define a list of sensors connected to the reference voltage circuit E. Check the 5 V voltage at the sensor connectors with the ignition on. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P06D2?

Yes, but get it checked soon

How much does it cost to fix P06D2?

The estimated repair cost for P06D2 is $17–889. Actual cost depends on your vehicle, location, and labor rates.

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