For Shop Owners

P0425 - Catalyst Temperature Sensor Circuit Bank 1 Sensor 1

Repair Importance Level: 2/3
Repair Difficulty Level: 2/3 What does this mean?

Possible causes

  • Faulty Catalyst Temperature Sensor
  • Catalyst Temperature Sensor harness is open or shorted
  • Catalyst Temperature Sensor circuit poor electrical connection
What does this mean?

Possible symptoms

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

P0425 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 P0425 - Catalyst Temperature Sensor Circuit Bank 1 Sensor 1 -

P0425 Information for specific makes

P0425 AUDI Catalyst Temperature Sensor Circuit Bank 1 Sensor 1
P0425 VOLKSWAGEN Catalyst Temperature Sensor Circuit Bank 1 Sensor 1

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P0425 Comments

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Any information is appreciated. Thanks
Repair Importance Level: 2
1=Low 2=Medium 3=High
Repair Difficulty Level: 2
1=Easy 2=Moderate 3=Hard

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