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1998 Ford Mustang GT 4.6L Poor Idle Quality, MIL Lamp on
Posted to Ford Driveability on 6/30/2013 11 Replies

This is our shop mechanics car. His complaint is an intermittent high idle. Stored code is P0138. I started out with the P0138 B1S2. This has me kind of stumped. Disconnecting the O2 B1S2, using a test light, I have power on the power ckt. Then, taking the tes...

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  Related Documents & Media  1998 Ford Mustang GT

 
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car Vehicle Data

1998 Ford Mustang GT

VIN 1FAFP42X8W
Engine4.6 L / 8 cyl / GAS
Trans5-speed Standard
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, MIL Lamp On
OccursAlways, Intermittently

Trouble Codes

P0138Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit High Voltage
Message Closed

car Vehicle Data

1998 Ford Mustang GT

VIN 1FAFP42X8W
Engine4.6 L / 8 cyl / GAS
Trans5-speed Standard
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, MIL Lamp On
OccursAlways, Intermittently

Trouble Codes

P0138Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit High Voltage