2001 Mustang Bullitt misfiring and p0153

4.6stang

New Member
Jan 15, 2007
10
0
0
Florida
Occasionally I notice the car misfiring on a day to day routine.However, this problem occurs mostly when its raining out. I was about to replace the coils on the car but this morning the check engine light put out a p0153 trouble code. I was wondering what the fix is for this? My car has a upr 0/r x-pipe with mil eliminators. Any help would be greatly appreciated:D
 
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P0153 - HO2S Sensor Circuit Slow Response

If the O2 sensor is old, my vote is to replace it.

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P0153 - HO2S Sensor Circuit Slow Response (HO2S-21) See DTC P0133

P0133 - HO2S Sensor Circuit Slow Response (HO2S-11) The HEGO Monitor checks the HO2S Sensor frequency and amplitude. If during testing the frequency and amplitude were to fall below a calibrated limit, the test will fail.

Contaminated HO2S sensor.
Exhaust leaks.
Shorted /open wiring.
Improper fueling.
MAF sensor.
Deteriorating HO2S sensor.
Inlet air leaks.

Access HO2S test results from the Generic OBD-II menu to verify DTC.