2002 Ford F-150 Code P0135

PEARHEAD34

MEMBER
2002 FORD F-150
V8
4WD
AUTOMATIC
73,000 MILES

Just got a Service Engine Light for my 2002 F-150. (Code P0135)
Tells me that I might have a bad oxygen sensor. How easy is this to change and or troubleshoot?

Wednesday, October 28th, 2009 AT 9:21 PM

3 Replies

OBXAUTOMEDIC

MECHANIC
3,711 POSTS

Hello,

O2 Sensors are pretty easy to replace.

They take a special to in most cases and in others a regular wrench is needed.

The code def is

P0135 Oxygen Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)

First thing I would check is the wiring on the sensor in question it could be that the wires ended up on the exhaust and melted, shorting it out. Then there are the fuses.

Also the sensor in question I believe is located on the passenger side in the exhaust manifold.

.

.

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Wednesday, October 28th, 2009 AT 9:34 PM

PEARHEAD34

MEMBER
2 POSTS

Where would the fuses be located?

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Thursday, October 29th, 2009 AT 9:09 AM

OBXAUTOMEDIC

MECHANIC
3,711 POSTS

Sorry, forgot to tell you were they were.

They are in the underhood fuse block there should be a diagram for there exact location I will see if mithell1 has diagram and post if does.

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Thursday, October 29th, 2009 AT 3:38 PM