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P0174 Diagnostic Trouble Code Discussion for December 2009

Fuel System Lean (Bank 2) *

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Trouble Ticket Help Requests for DTC P0174

	Help Request	Posted
	2004 Ford Freestar 3.9L Misfire, MIL Lamp on VIN: 2FMZA51604 P0174: lean codes. Van came in with a lean code and misfire on number 5. We know the problems with 5.4's and bad spark plugs.Could this be the same thing? We have checked compression on number 5 and it is 120 pounds. I moved number 4 spark plug to number and vice versa and the m...	December 02, 2009
	2002 BMW 530i 3.0L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: WBADT53492 P0174: system to lean bank 2. ... code was P0174 System Too Lean Bank 2 Changed B1 Pre-Cat O2 sensor and reset. Vehicle runs rough/stumbles/misfires throws MIL lamp and smooths out. Usually occurs when sitting at a long light Then the following codes: P0300 Random Misfire P1351 Misfire C...	December 05, 2009
	2002 Ford F-150 XL 4.2L Cuts out, MIL Lamp on VIN: 1FTRF17252 P0174: lean bank 2. lean bank 1&2 codes is all i got but engine still has a slight ign. miss (stutter)on acceleration. i have checked the codes many times in last 8 to 12 months for customer and before and after all the maintinance he has done we still get & only get lean...	December 05, 2009
	2006 Lincoln Mark LT 5.4L Hesitation, Poor Fuel Economy, MIL Lamp on VIN: 5LTPW16506 P0174: lean bank too. missfire occures at 1800 rpm , drives poors	December 10, 2009
	2008 BMW 335i 3.0L Poor Idle Quality, Misfire, MIL Lamp on, WHITE SMOKE, COLD VIN: WBAWB73528 P0174: b2 lean. Customer cals with "serious check engine light and car running rough and smoking". I scan and find all these lean and misfire codes, engine in safe mode(restricted boost I think)retrieve freeze frame data and clear codes. Start car, idles smooth, no sm...	December 12, 2009
	2004 Ford Taurus SE 3.0L MIL Lamp on VIN: 1FAFP53224 P0174: lean bank 2. ... this 04 Tauras that has come back for its 3rd. visit with the check engine light on.First 2 visits it had (2)codes stored p0171 & p0174.Both time both codes were only stored in memory and unable to duplicate.Checked for...	December 14, 2009
	1998 Chevrolet K1500 Cheyenne 5.7L Cuts out VIN: 1GTEK19R1W P0174: Fuel Trim System Lean (Bank 2). First of all, sorry for the long post. Customer concern is that if engine is started and driven immediately it has no power and cuts out. If you let it run for a few minutes it runs fine. The "Service Engine Soon" light is on all the time with the code...	December 15, 2009
	1999 Ford Explorer XLT 4.0L Poor Idle Quality, Misfire VIN: 1FMZU34E6X P0174: testing and results. TRUCK CAME IN ROUGH IDLE AND MILL ON FOUND ALL THE CODES LISTED ABOVE AND ALSO FOUND THE VACUUM LEAK ALSO THE PASSENGER SIDE HEAD HAS LOUD KNOCKING NOISE THOUGHT WAS THE TIMING CHAIN BECAUSE FOUND THAT IT WAS LOOSE. FOUND TSB FOR CHAIN NOISE AND DID THE REPAIR...	December 15, 2009
	2003 BMW 330i 3.0L Poor Idle Quality, MIL Lamp on VIN: WBAV53473K P0174: . Has lean mixture, pending po171 & po174 codes; no obvious vacuum leaks	December 16, 2009
	1999 Ford Explorer XLT 4.0L Poor Idle Quality, Misfire VIN: 1FMZU34E6X P0174: testing and results. TRUCK CAME IN ROUGH IDLE AND MILL ON FOUND ALL THE CODES LISTED ABOVE AND ALSO FOUND THE VACUUM LEAK ALSO THE PASSENGER SIDE HEAD HAS LOUD KNOCKING NOISE THOUGHT WAS THE TIMING CHAIN BECAUSE FOUND THAT IT WAS LOOSE. FOUND TSB FOR CHAIN NOISE AND DID THE REPAIR...	December 19, 2009
	2003 Jaguar X-Type 3.0L Poor Idle Quality, Cuts out, Misfire, MIL Lamp on VIN: SAJEA51C43 P0174: Lean bank two. Symptom of very rough idle and missfire during warm-up, MIL flashes upon attempting to accelerate while in park. After at least 50% warmed up engine starts to smooth out and MIL quits flashing. Cleared all codes but all return within a day or so. Engine runs w...	December 29, 2009