2008 Jeep Wrangler Unlimited Sahara 3.8L MIL Lamp on
We have spent much time and effort on this one. Customer installed a Bosch sensor and the code returned so he brought it to us. We had scopes on all four wires of both front sensors and indeed it would almost flat line after running a bit. Heaters were com...
FIX posted 3/1/2022
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Message Closed
Vehicle Data2008 Jeep Wrangler Unlimited Sahara
Trouble Codes
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Vehicle Data
2008 Jeep Wrangler Unlimited Sahara
VIN | 1J4GA59168 |
Engine | 3.8 L / 6 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | Fuel Injection |
Emissions | OBD-II Compliant |
Symptoms | MIL Lamp On |
Occurs | Always |
Trouble Codes
P0139 | Heated Oxygen Sensor (Bank 1 Sensor 2) Slow Response |