Catalyst Temperature Sensor Range/Performance Bank 1 Sensor 1


Table of contents

P0426 AUDI Possible Causes

  • Faulty Catalyst Temperature Sensor
  • Catalyst Temperature Sensor harness is open or shorted
  • Catalyst Temperature Sensor circuit poor electrical connection

How do I fix code P0426 AUDI?

  Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.

Cost of diagnosing the P0426 AUDI code

  The cost of diagnosing the P0426 AUDI code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

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

P0426 AUDI 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.

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