2002 Ford Ranger O2 Sensor

  • 3 POSTS
  • 2002 FORD RANGER

Computer problem
2002 Ford Ranger 6 cyl Four Wheel Drive Manual 82000 miles

Last November my slave cylinder went out. I pulled the trans and replaced it. As I was reinstlling the trans I crushed the plug to the O2 sensor, (motor side), between the trans and engine. I drove it a few months with it disconneced. When it came time to get the smog test done, I made up some wires and connected them to a new O2 sensor with bullet connectors. The repair worked for about 4 months without a problem. Recently the wires fell onto the exhaust manifold, melted and blew the fuse for the O2 heater circuit. I removed my "repair" and replaced it with a new pigtail with the proper plug and another new O2 sensor. I wired it the same way I did with the first repair. Now I am getting 2 trouble codes that confuse me. They are P1131 {Lack of HO2S1 Swithes- Lean (Bank 1, Sensor1)} and P1132 {Lack of HO2S1 Switches- Rich (Bank 1, Sensor 1)}. Could the shorted wires have damaged the ECM or anything else? If not what else could cause the trouble codes?
I am a boat mechanic who loves wrenching on anything, but emissions are not one of my strong points. Any help would be greatly appreciated. Thanks

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have the same problem?
Monday, October 27th, 2008 AT 11:57 PM

1 Reply

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BANK 1 SENSOR ONE 1ST O2 sensor from cylinder #1 -2 -3 (p side )
bank 1 sensor two 2nd O2 sensor from cylinder #1 -2-3 (P side)
bank 2 sensor 1 is the 1st O2 sensor from cylinder #4-5-6 (d side )
bank 2 sensor 2 is the 2nd O2 sensor from cylinders # 4-5-6 (D side )
make sure u have check and replace the correct sensor
these are the other possibility s
DTCs P1130, P1131, P1132, P1150, P1151 Or P1152: Upstream HO2S Not Switching Continuous Memory DTCs P1130 and P1150 indicate when an HO2S fails to switch due to a circuit or fuel at or exceeding a calibrated limit. KOER and Continuous Memory DTCs P1131,

P1132, P1151 and P1152 indicate a concern when fuel control system does not detect HO2S switching for a calibrated time. DTCs P1130, P1131 and P1132 refer to HO2S-11. DTCs P1150, P1151 and P1152 refer to HO2S-21.

Possible causes for these faults are:
Fuel System

Excessive fuel pressure, leaking or contaminated fuel injectors, leaking fuel pressure regulator, low fuel pressure or engine running out of fuel or vapory recovery system fault. Induction System

Air leaks after MAF sensor, vacuum leaks, PCV system or improperly seated engine oil dipstick.
EGR System

Leaking gasket, stuck EGR valve or leaking diaphragm or EVR.
Engine Mechanical

Engine oil overfilled, cam timing, cylinder compression or exhaust leaks before or near HO2S.

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Tuesday, October 28th, 2008 AT 6:14 AM

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