1997 Mercury Cougar XR-7 3.8L MIL Lamp on
I followed pinpoint charts for testing voltage from and back to computer on vpwr and heater circuits. Battery voltage on both. Checked resistance at o2 heaters and found both to be less than [...] both bank 2 sensors. Then got bank 1 sensor 1 heater fault but ...
Summary posted 10/1/2008
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Vehicle Data1997 Mercury Cougar XR-7
Trouble Codes
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Message Closed w/Summary
Vehicle Data
1997 Mercury Cougar XR-7
VIN | 1MELM6245V |
Engine | 3.8 L / 6 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI / SEFI |
Emissions | OBD-II Compliant |
Symptoms | MIL Lamp On |
Occurs | Cold, Intermittently |
Trouble Codes
P0155 | Heated Oxygen Sensor (Bank 2 Sensor 1) Heater Circuit Malfunction |
P0161 | Heated Oxygen Sensor (Bank 2 Sensor 2) Heater Circuit Malfunction |