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2003 Cadillac CTS 3.2L MIL Lamp on
Posted to GM Driveability on 2/13/2013 3 Replies

This car came in with heater circuit codes for the bank 2 sensors 1 and 2. Replaced both and the light would not stop coming on. I followed the flow chart and wiring diagrams that I found online and come to find out that the bank 1 sensor 2 and bank 2 sensor 2...

3 Replies Received (View Replies)

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car Vehicle Data

2003 Cadillac CTS

VIN 1G6DM57N53
Engine3.2 L / 6 cyl / GAS
Trans5-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On

Trouble Codes

P0133Heated Oxygen Sensor (Bank 1 Sensor 1) Slow Response
P0135Heated Oxygen Sensor (Bank 1 Sensor 1) Heater Circuit Malfunction
P0153Air Fuel Sensor (Bank 2 Sensor 1) Slow Response
Message Closed

car Vehicle Data

2003 Cadillac CTS

VIN 1G6DM57N53
Engine3.2 L / 6 cyl / GAS
Trans5-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On

Trouble Codes

P0133Heated Oxygen Sensor (Bank 1 Sensor 1) Slow Response
P0135Heated Oxygen Sensor (Bank 1 Sensor 1) Heater Circuit Malfunction
P0153Air Fuel Sensor (Bank 2 Sensor 1) Slow Response