OBD Guide
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P2078

Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit High Bank 1

P2078 is an OBD-II diagnostic trouble code meaning: Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit High Bank 1. Common causes: open circuit in the imt valve position sensor circuit, short circuit to power in the sensor circuit. Estimated repair cost: $28–89.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$28–89 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced engine power
  • Unstable operation at idle
  • Deterioration in acceleration dynamics
  • Increased fuel consumption

Causes

  • Open circuit in the IMT valve position sensor circuit
  • Short circuit to power in the sensor circuit
  • IMT valve position sensor malfunction
  • Problems with the wiring harness or connectors
  • Malfunction of the intake manifold adjustment valve itself

How to Fix

  1. Check the continuity of the IMT valve position sensor circuit
  2. Check for short circuit to power
  3. Check connectors and wiring harness for damage
  4. Check the functionality of the IMT valve position sensor
  5. If necessary, replace the IMT sensor or valve

Related codes

P2079P2080P2081

Error P2078 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P2078 code mean?

P2078 is an OBD-II diagnostic trouble code that indicates: Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit High Bank 1

What causes a P2078 error code?

The most common causes of P2078 include: Open circuit in the IMT valve position sensor circuit; Short circuit to power in the sensor circuit; IMT valve position sensor malfunction; Problems with the wiring harness or connectors.

How do I fix a P2078 diagnostic trouble code?

To fix P2078: Check the continuity of the IMT valve position sensor circuit. Check for short circuit to power. Check connectors and wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P2078?

Yes, but get it checked soon

How much does it cost to fix P2078?

The estimated repair cost for P2078 is $28–89. Actual cost depends on your vehicle, location, and labor rates.

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