OBD Guide
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P046B

Catalyst Temperature Sensor 1/2 Correlation Bank 2

P046B is an OBD-II diagnostic trouble code meaning: Catalyst Temperature Sensor 1/2 Correlation Bank 2. Common causes: malfunction of the catalytic converter temperature sensor (bank 2, stage 1 or 2), damage to the wiring harness to the temperature sensors. Estimated repair cost: $56–278.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–278 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced engine power
  • Increased fuel consumption
  • Unstable idling

Causes

  • Malfunction of the catalytic converter temperature sensor (bank 2, stage 1 or 2)
  • Damage to the wiring harness to the temperature sensors
  • Malfunction of the catalytic converter itself
  • Sensor circuit grounding problems
  • Engine ECU malfunction

How to Fix

  1. Run diagnostics to confirm code P046B
  2. Check the condition of temperature sensors and their electrical circuits
  3. Check the resistance and signal of the temperature sensors
  4. If necessary, replace faulty sensors
  5. If the catalytic converter fails, replace it
  6. Clear the error code and check if it returns

Related codes

P0420P0430P0133P0134

Error P046B by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P046B code mean?

P046B is an OBD-II diagnostic trouble code that indicates: Catalyst Temperature Sensor 1/2 Correlation Bank 2

What causes a P046B error code?

The most common causes of P046B include: Malfunction of the catalytic converter temperature sensor (bank 2, stage 1 or 2); Damage to the wiring harness to the temperature sensors; Malfunction of the catalytic converter itself; Sensor circuit grounding problems.

How do I fix a P046B diagnostic trouble code?

To fix P046B: Run diagnostics to confirm code P046B. Check the condition of temperature sensors and their electrical circuits. Check the resistance and signal of the temperature sensors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P046B?

Limited driving only, diagnose soon

How much does it cost to fix P046B?

The estimated repair cost for P046B is $56–278. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat