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AutoCodes - Generic - P0426

P0426 Code - Catalyst Temperature Sensor Range/Performance Bank 1 Sensor 1

- Code Popularity: 34,388 Views
- Repair Importance Level: 2/3
- Repair Difficulty Level: 2/3
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What are the Possible Causes of the DTC P0426?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Catalyst Temperature Sensor
  • Catalyst Temperature Sensor harness is open or shorted
  • Catalyst Temperature Sensor circuit poor electrical connection
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How to Fix the DTC P0426?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0426 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code P0426 Description

The Engine Control Module (ECM) monitors the Catalyst Temperature Sensor Circuit Performance, which measures the temperature of the catalyst. Catalyst Temperature Sensor function by increasing their resistance with increasing exhaust gas temperature. The ECM sets the OBDII code when the Catalyst Temperature Sensor signal is not to factory specifications.

OBDII Code P0426 - Catalyst Temperature Sensor Range/Performance Bank 1 Sensor 1 - AutoCodes.com
P0426 Code - Catalyst Temperature Sensor Range/Performance Bank 1 Sensor 1

Need More Information on the Code?

Need more information on how to fix the P0426 code? Get Access to Factory Service Manuals

Information for Specific Makes

  • P0426 Audi Catalyst Temperature Sensor Range/Performance Bank 1 Sensor 1
  • P0426 Volkswagen Catalyst Temperature Sensor Range/Performance Bank 1 Sensor 1

Need Help with the Code?

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Code P0426 comments

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