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P1131 Diagnostic Trouble Code Discussion for May 2010

Heated Oxygen Sensor (Bank 1 Sensor 1) Indicates A/F Ratio Too Lean

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Trouble Ticket Help Requests for DTC P1131
Help Request Posted
2001 Ford F-150 XLT 5.4L Hesitation, Cuts out VIN: 1FTRW08LX1
P1131: Lack of heated o2 bank 1 sensor 1. Came in for loss of power ender load the codes where in history cant get them to come back- i smocked system for any vacuum leaks none found- o2's reading ok along with fuel trims,temp ect. Checked cats for blockage the truck runs fine until you get on the gas...
May 11, 2010
1997 Ford Contour GL 2.0L Poor Idle Quality, Surge, Stall VIN: 1FALP6533V
P1131: Lack of H20S11 swiches - Sensor indicates leak. From cold start. Crank 4-5 time before it will stay running. Then it will idle up and down and die some times. Driving you can not tell anything is wrong till you stop. Then it will try to die. Some times you can read the 02 sensors or one or then neither one....
May 17, 2010