P0152 and P2197 - Ranger-Forums - The Ultimate Ford Ranger Resource


4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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Old 03-26-2009
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P0152 and P2197

these are the codes my truck has thrown at me (2003 xlt 4x4 5 spd).
for the P0152 it says:

1. oxygen sensor defective
2. fule system running very rich or lean check other codes first.
3. engine misfire condition repair
4. fule pressure very high or low fuel pump or pressure regulator
for the P2197:

1. failed HO2S sensor
2. open or short circuit condition
3. failed fuel pump or blocked fuel filter
4. MAF sensor failure
5. vacuum leak

i have replace the O2 sensors within the last 4 months.
changed the fuel filter yestarday.
replaced the spark plugs and wires today as long with checking with vaccum leaks ( didn't find any that i know of)
cleaned the MAF sensor and the fuel pump is cuttin on before i start the truck. anything else i can check before i take it to a shop?
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Old 03-26-2009
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faulty o2 sensors. bad maf
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Old 03-27-2009
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Both of these codes refer to the driver side front oxygen sensor only. P0152 says that the voltage input to the PCM is too high (indicates rich) but P2197 says that the sensor voltage is stuck low (lean). Could be because of an incorrect mixture or misfire condition on the left cylinder bank or because of a faulty sensor or faulty wiring.

Last edited by V8 Level II; 03-27-2009 at 11:33 AM.
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Old 03-27-2009
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thanks alot bob im going to check it now.
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