P0427

Technical Definition:

Catalyst Temperature Sensor Circuit Low (Bank 1 – Sensor 1)

Trouble Code: P0427
Address: 0x0427
System: Powertrain
Subsystem: Auxiliary Emission Controls
Technical Description:

Possible Causes:

Possible Symptoms:

Catalyst Temperature Sensor Low Input Bank 1 Sensor 1

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

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

Specific Makes:

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