P0172/P0175 Errors Is it safe to Drive?

[RJMDAD996]

Brothers - I Have an 2003 996 with 78K miles - I am now getting error codes P0172/P0175 Fuel too lean - But I have to now drive 600 miles tomorrow, will it be safe? the car is driving fine and I just replaced my MAF last week.

[Loren]

Brothers - I Have an 2003 996 with 78K miles - I am now getting error codes P0172/P0175 Fuel too lean - But I have to now drive 600 miles tomorrow, will it be safe? the car is driving fine and I just replaced my MAF last week.

P0172 Oxygen Sensing Adaptation, Idle Range, Bank 1 – Below Limit

Possible fault cause

- Incorrect signal from MAF sensor

- Fuel pressure too high

- Fuel injector leaking

- EVAP canister purge valve open

P0175 Oxygen Sensing Adaptation, Idle Range, Bank 2 – Below Limit

Possible fault cause

- Incorrect signal from MAF sensor

- Fuel pressure too high

- Fuel injector leaking

- EVAP canister purge valve open

Since you have the same fault on both engine banks it is likely that the problem is the MAF.

Are you sure you got the correct part?

Also look for loose fittings (air leaks) at the air intake.

[RJMDAD996]

Loren, THanks for the quick reply - the MAF was replaced last week - Makes no sense, they advised me they checked everything and the only problem via codes - tha MAF was replaced at $900.00 - Gotta Love Dealerships - My ONYL CONCERN - IS IT SAFE TO DRIVE 600 MILES WITH THE ERROR?

Lastly, the only problem other than the CEL re: P1075/072 - is Upon the am starting, the idle is very rough, not steady at all...Thanks again - really appericate it...

[Loren]

Look for air leaks. Hose not on or not tight.

For $900 they should fix it right.

A PST2 or PIWIS will tell whether the MAF is working properly.

[steveespo]

I had the CEL pop up 2 weeks ago, changed the air filter last week, and yesterday read those same codes with Durametric. Reset codes, drove 150 miles yesterday and codes have not reappeared. Figure I had an air leak at the Throttle body or around the MAF that I may have fixed during air filter replacement. Dealer may have left something loose on yours, check the hoese clamps, MAF connector, oil cap and any vacuum hoses for leaks.

Steve