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P0172 Diagnostic Trouble Code Discussion for March 2006

Fuel System Rich (Bank 1)

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Trouble Ticket Help Requests for DTC P0172
Help Request Posted
2001 Volkswagen Golf GLS 1.8L MIL Lamp on VIN: 9BWGD61J71
P0172: system too rich. ... in my shop that I'm just stumped on. The car has been to 2 different dealers for code po172 (system too rich). They all have changed the MAF sensor saying that is the problem. When the customer returned to the same dealer the second time they replaced the ...
March 01, 2006
1999 Dodge Intrepid 2.7L Excessive Emissions, Poor Fuel Economy, MIL Lamp on VIN: 2B4HD56R1X
P0172: Fuel System Rich (Bank 1). Car came in for mil on. Codes p0 172,175.)both banks reading rich. Performed tuneup, Replaced pcv and hose[plugged solid]. Replaced both upstream 02 sensors,air filter etc. checked for vacuum leaks and none were found. engine runs nice and smooth. Readings on ...
March 04, 2006
2001 Mercury Sable LS Premium 3.0L MIL Lamp on VIN: 1MEFM55S41
P0172: rich. car came in mil light on codes po172,po175 rich on both [...]. replaced maf no change fuel pressure is 55 psi steady with no change at idle or wide open throttle ,alldata calls for 35-65. 55 psi sounds to high to me.can any body help me with the way this fuel ...
March 07, 2006
2001 Subaru Forester L 2.5L MIL Lamp on VIN: JF1SF63531
P0172: Fuel System Too Rich (Bank 1). code po172 system rich bank one. map reads normal fuel pressure normal/ runs ok idles ok. could not get a o2 sensor rading on snAp on or mentor. only shows reaadings for bank one sensor 2. short term fuel trim climbs from 0 at start up to -35 in a few seconds....
March 10, 2006
2000 Plymouth Grand Voyager 3.0L MIL Lamp on, Fuel trims way neg VIN: 2P4GP2435Y
P0172: Fuel System Rich (Bank 1). Good day Tech's. We have this 2000 Grand Voyager with a 3.0L and 70,000 miles. Has rich code PO172. Long term fuel trim is around neg 8 to neg 16 , and STFT is moving back and forth keeping fuel control working. The 02 sensor I only viewed on my scan tool but ...
March 11, 2006
2004 Mitsubishi Eclipse GTS 3.0L Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: 4A3AC74H84
P0172: Fuel System Rich (Bank 1). Cutomer complaint is that car will stall intermitently at idle. States that idle will go to 1500 rpm, start to fluctuate, and car will then stall. Cust. said that the check eng. light came on after stall approx. 30 miles later. Cust. has installed an after mar...
March 14, 2006
1998 Dodge Intrepid 2.7L MIL Lamp on VIN: 2B3H0Y6R6W
P0172: Fuel System Rich (Bank 1). Vehicle came in with check engine light, scanned for codes and had po172 and po175, checked compression and smoke tested vacume system and tested fuel pressure all checks good. The big thing I found was long term fuel trim both sides read -25, now the funny th...
March 20, 2006
1999 Saturn SL2 1.9L MIL Lamp on, low fuel trim VIN: 1G8ZK5274X
P0172: Fuel Trim System Rich (Bank 1). P0172 stored; O2 and fuel trims comfirm engine is running rich. Car has no other symptoms. Engine vacuum is good at 20" idle, 22" at 2500 RPM. I feel this rules out valve timing. I've read of PCM programming that causes fuel trim errors, but I am ab...
March 20, 2006
1998 Honda Prelude 2.2L MIL Lamp on
P0172: Fuel System Too Rich (Bank 1). ... can help. This car has a p0172 (rich exhaust) code set after 75+ miles of driving. St.fuel trim will go to -25 at idle an at cruise. 02 sensor looks to be new (poss. aftermarket)everything looks good on mastertech. I can drive system rich &lean an inj....
March 30, 2006
2003 Dodge Intrepid SE 2.7L Excessive Emissions, MIL Lamp on VIN: 2B3HD46RX3
P0172: Fuel System Rich (Bank 1). The vehicle came in because it wouldn't pass emissions test we don't get into this kind of work but due to it belonging to a good customer I kinda got stuck with it. At first we pulled codes and it said the 02 sensor 1/1 was bad so we replaced it light went ou...
March 31, 2006
2004 Ford E-350 Super Duty 5.4L Hesitation, Surge, MIL Lamp on VIN: 1FDWE35L94
P0172: System too rich. Hi, and thanks in advance for the help. This is a Ford cube van (is OBDII compliant) and we are having some really goofy problems. Complaint is that it surges at hi-way speeds and won't go over 65mph (not governed). Initial scan test found the listed the above...
March 31, 2006