OBD Guide
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P0546

Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 1

P0546 is an OBD-II diagnostic trouble code meaning: Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 1. Common causes: broken wire or connector of the egt sensor, malfunction (failure) of the egt sensor. Estimated repair cost: $28–133.

Severity
🔴 High
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$28–133 (est.)

Symptoms

  • Check Engine Light Illuminates
  • Emergency engine operation (power limitation)
  • Increased fuel consumption
  • DPF or catalytic converter errors
  • Real overheating of the exhaust system (in rare cases)

Causes

  • Broken wire or connector of the EGT sensor
  • Malfunction (failure) of the EGT sensor
  • Short circuit in the sensor circuit to power
  • Real overheating of exhaust gases due to improper engine operation
  • Oxidation of sensor connector contacts

How to Fix

  1. Inspect the EGT sensor connector and wiring for damage and oxidation.
  2. Measure sensor resistance at different temperatures according to specification
  3. Check the integrity of the signal wire from the sensor to the ECU
  4. If the circuit is broken, restore the wiring or replace the harness
  5. If the wiring is OK, replace the exhaust gas temperature sensor
  6. Reset the error and make sure it doesn't reappear

Related codes

P0544P0545P0547P0548P2032

Error P0546 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P0546 code mean?

P0546 is an OBD-II diagnostic trouble code that indicates: Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 1

What causes a P0546 error code?

The most common causes of P0546 include: Broken wire or connector of the EGT sensor; Malfunction (failure) of the EGT sensor; Short circuit in the sensor circuit to power; Real overheating of exhaust gases due to improper engine operation.

How do I fix a P0546 diagnostic trouble code?

To fix P0546: Inspect the EGT sensor connector and wiring for damage and oxidation.. Measure sensor resistance at different temperatures according to specification. Check the integrity of the signal wire from the sensor to the ECU. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0546?

Yes, but get it checked soon

How much does it cost to fix P0546?

The estimated repair cost for P0546 is $28–133. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat