Question about 1996 Cadillac DeVille

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MY CADALLIC IS HARD TO START RUNS RICH HAS A PO175 CODE IN BANK 2 CANNOT FIGURE IT OUT

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CODE PO175 FUEL TRIM SYSTEM RICH BANK 2 CONDITIONS THESE ARE YOUR POSSIBLE CAUSES. YOUR EVAP CANISTER FUEL SATURATED.YOU COULD HAVE A BAD ECT IAT MAF SENSOR.YOU COULD HAVE RUPTURE FUEL PRESSURE REGULATOR.ALSO A LEAKING FUEL INJECTOR.

Posted on Sep 09, 2009

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2005 jeep grand cherokee Po204 205 175 174 138 158. Runs rough. Whats wrong?


PO204,205 are injector circuit malfunction,PO174 is a system lean code, PO175 is system rich code, PO138 is heated oxygen sensor bank1 sensor 2 circuit high voltage, PO158 is heated oxygen sensor bank2 sensor 2 circuit high voltage. This is a repair for your mechanic. When they fix the injector and o2 circuits the rich lean codes will also be repaired. Continued driving will ruin your catalytic converter. Good luck

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O4 sebring, PO175, PO174 codes?


Sounds like a problem with one of the O2 sensors.
Code 174 is bank two being too lean, and 175 is bank two being too rich. The computer tries to keep the fuel mixture switching back and forth between rich and lean. If the sensor is "lazy" the computer will make the mixture too rich or lean trying to get the sensor to react.
A mechanic can watch the sensor performance with a scanner to see what they are doing. You have two sensors on each bank.

Apr 06, 2013 | Cars & Trucks

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I have a 1997 1500 with a 5.0 Im getting codes po143 po172 po175 and po300. Im not sure what the cause could be.


Code 300 is for a random miss.
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Mustang gt code po175 how to fix it


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Dec 24, 2010 | 1996 Ford Mustang

3 Answers

PO175 code


this code refers to an o2 sensor bank2 (bank2 is the side of the engine opposite of your number1 cylinder) detecting a rich condition (too little oxygen in exhaust). Driveability should be fine but you may develop a cylinder misfire as a result if this isn't corrected soon. Usual causes include a vacuum/exhaust leak so inspect all vac hoses and pcv hoses and replace if needed. A dirty or faulty mass air flow sensor (you can get a can of mass air flow cleaner and spray the sensor and see if that helps or have the sensor tested to determine proper function or simply replace it). The last usual cause is faulty fuel delivery (usually a dirty/clogged fuel injector) but first check fuel lines to make sure nothing is pinched, leaking, etc, then check fuel pressure at fuel rail, next you can try using some fuel injector cleaner when your tank is almost empty, but getting your injectors professionally inspected/checked/cleaned/replaced if necessary is the best sure way to go. hope this gives you a good point of reference to start from let me know if you need any further assistance, good luck and merry christmas to you

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2002 6 cylinder 3.o engine Ford Ranger. Cold start problem. Bank 1 code PO172 and Bank 2 code PO175. System to rich. Where to start checking.


Changed the air filter lately? Possibly defective O2 sensors, but I doubt it. If air filter and intake are clear, I'd check barometric pressure sensor and mass air flow sensors. Get a Haynes or Chilton's for $25 at Pep Boys for instructions on testing these componenets

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Check Engine light is on my 1997 F150 with a small V-8. The tester returns codes P0171, P0172, P0174 and P0175. What does all this mean?


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Sep 16, 2009 | 1997 Ford F150 Regular Cab

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