
1997 Cadillac Seville STS 4.6L MIL Lamp on
Getting codes P0137 and P1139. Have followed the trouble trees for the codes to no avail, all wiring checks out and a new pcm was installed but it didn't fix the problem. The precat O2 sensor will stay at .080 volts and occassionally will switch like the upstr...
Summary posted 7/26/2011
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Message Closed w/Summary
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VIN | 1G6KY5297V |
Engine | 4.6 L / 8 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | Fuel Injection |
Emissions | OBD-II Compliant |
Symptoms | MIL Lamp On |
Occurs | Always |
Trouble Codes
P0137 | Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit Low Voltage |
P1139 | Heated Oxygen Sensor (Bank 1 Sensor 2) Insufficient Switching |
Message Closed w/Summary
Vehicle Data
1997 Cadillac Seville STS
VIN | 1G6KY5297V |
Engine | 4.6 L / 8 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | Fuel Injection |
Emissions | OBD-II Compliant |
Symptoms | MIL Lamp On |
Occurs | Always |
Trouble Codes
P0137 | Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit Low Voltage |
P1139 | Heated Oxygen Sensor (Bank 1 Sensor 2) Insufficient Switching |