Ford F150 - Check Engine Light and possible solutions for codes

mad9dog9

2001 Ford F150 Check Engine light on The OBD 11 codes I receive are P1131 and P0135 I replace the O2 sensor in Bank 1 Sensor 1 about 6 months ago.

catmechanic07 · Posted: Thu May 08, 2008 8:18 pm Post subject:

Could be bad gas!!!!!!!!!!!!!!! are you adding any water? Thinking maybe coolant is ruining your 02 sensors. Just a thought

Webmaster · Posted: Fri May 09, 2008 8:51 am Post subject:

P0135 - Oxygen O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)
more info at http://www.obd-codes.com/p0135
P1131 - Lack of Upstream Heated Oxygen Sensor Switch - Sensor Indicates Lean - Bank No. 1

Also check out this other thread:
http://www.fordf150.net/forums/viewtopic.php?t=51788
_________________
2007 Ranger, Black 2001 SuperCrew, 98 SuperCab 4x4