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P0302 then P0153 and P1151 codes.

M

musicars

New CEG'er
Joined
Jan 8, 2007
Messages
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I have 1997 Contour SE 2.5L auto transmission with 86,000 miles. I had a miss and got a P0302 code last week. I pulled the #2 wire and plug and found carbon tracking down the side of the plug. I cleaned it and put dielectric grease on it. The wire measured 8,000 ohms. The longer #1 wire only measured 6,000 ohms. I’m assuming I need new wires at this point. The car runs great and the miss is gone but I immediately got a P0153 with a pending P1151. In searching this forum I find similar cases where it could be anything from oxygen sensor to fuel pressure regulator. I have had other issues with this that got me thinking the fuel pressure regulator is bad. Before I start replacing things I wanted to see if anyone else had these codes and figured it out. The freeze frame data is as follows:
Freeze frame DTC Stored:P0153
Fuel System 1 Status: Closed Loop – fault with at least one oxygen sensor
Fuel System 2 Status: Not Supported
Calculated Load Value: 59.22%
Engine Coolant Temp: 190.4
Short Term Fuel Trim – Bank 1: -3.91%
Long Term Fuel Trim – Bank 1: 3.91%
Short Term Fuel Trim – Bank 2: 1.56%
Long Term Fuel Trim – Bank 2: 3.91%
Engine RPM: 2058.00rpm
Vehicle speed sensor: 38.1 mph

Thanks for any input!
 
Change the Bank 2 Upper O2 Sensor and go from there. This is the sensor next to the radiator. If you are standing in front of the radiator, it is to the left of the Precat Converter. Removing the oil filter will give you more room to maneuvre. You need an O2 sensor removal tool or a 7/8 inch or 22 mm crescent (open ended) wrench. Autozone or Advance sells them.
 
I just had the same code p0153 followed with an p01151. the car ran alittle sluggish. didn't drive it till the next day and now it didn't wanna start! I checked for codes again and I had the pending code p0103. well i replaced the oxygen sensor and the car started but is running rough. I erased the codes and none have popped up yet. should i have disconnected the battery to reset the computer?
 
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