1997 Ford F150 with codes P0131, P0135, and P0155 all came up, what does this mean?

Question

1997 Ford F150 4.6L V8 with codes P0131, P0135, and P0155 all came up, what does this mean? Where do I start to fix my problem?

Answer 1

Hi there

The first 2 codes are for an issue with the bank1 sensor 1 O2 sensor. This is the sensor before the catalytic converter on bank 1. The final code, P0155 is for an issue with the heater element on the bank 2 O2 sensor #1. For these codes the first thing to check is the fuse for the O2 sensor and the wiring. Many times the heater element in the sensor will fail and cause the code. Replacing the sensors usually will resolve the problem.

P0155 FORD - O2 Heater Circuit Bank 2 Sensor 1
Read more: https://www.autocodes.com/p0155_ford.html