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P0172 Diagnostic Trouble Code Discussion for September 2008

Fuel System Rich (Bank 1)


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Trouble Ticket Help Requests for DTC P0172
Help Request Posted
2002 Ford F-150 XL 4.2L MIL Lamp on VIN: 1FTRF17262
P0172: rich bank1. dont know where "extra" fuel is coming from. re-set fuel trim and test drove. trim numbers right back to -14% after drive. all seems good thanks in advance for your help.
September 03, 2008
1998 Saturn SL2 1.9L MIL Lamp on VIN: 1G8ZK5270W
P0172: Fuel Trim System Rich (Bank 1). VEHICLE CAME IN W/PO172 BANK 1 RICH CONDITION, SPK PLUG GAP IS .040in. Fuel Pressure regulaotr and oxygen sensor has been changed at another shop. At idle vac is 19in and 2500 rpm vac is 21in. so valve timing is ok. Fuel pressure is 47 psi,i pinched the hose t...
September 03, 2008
2003 Chevrolet Express 3500 6.0L Poor Idle Quality, Stall VIN: 1GCHC39U53
P0172: Fuel Trim System Rich (Bank 1). help!!! this 3500 series van will not idle, fuel trims are in the negative -15 to -20. it is not the fuel pressure regulate, i pulled the vac line and no fuel at all. the idle will surge up and down and 90 percent of the time it will stall at idle. driving at ...
September 17, 2008
2002 Mercury Sable LS 3.0L MIL Lamp on, vacuum leak(?) VIN: 1MEFM55S42
P0172: rich bank 1. ... got a Mercury Sable 24 valve car with rich codes for bank 1 and 2 (PO172 and P0175). Codes appeared after another shop did a tune up which included removing the upper intake. Original complaint was for misfire codes and the shop replace all plugs and wires...
September 19, 2008
2001 Chrysler Town & Country (Van) Limited 3.8L Excessive Emissions VIN: 2C8GP64LX1
P0172: system rich. CHECKED ALL THE BASICS. FUEL TRIM GOES NEG INSTANTLY. EVEN WITH UPSTREAM O2 DISCONNECTED THE REAR ONE WILL READ 900mv, RICH. HAPPENS @IDLE & CRUISE. TRIM SEEMS TO GO NEG FASTER OFF IDLE. PLUGS ARE NOT FOULED. NOT SMOKING OUT TAIL PIPE. COMPUTER IS CONTROLI...
September 24, 2008
2001 Volkswagen Golf GL 2.0L MIL Lamp on VIN: 9BWBS61J31
P0172: rich condition. ... in 2 months ago with check engine light ON. Scan PCM retrieve 3 codes P0101,p0172,p0171, replace mass airflow sensor and perform maintainance tune up ( plugs, wires , fuel filter, air filter). Now car back again with P0172 rich condition indicated, dont ha...
September 24, 2008
1997 Volkswagen Jetta GLS 2.0L Poor Fuel Economy, MIL Lamp on VIN: 3VWSB81H6V
P0172: Sys Rich Bank 1. Oh how I love thus Farfenhugen... Has P0172 fuel trim rich code .. Fuel pressure 35 eng running..no leakdown even 20 min after shutoff. Eng temp. good 190-200. Fuel press reg. not spitting into vac. line. Tried reman MAF (Not fond of the reman part) no change....
September 26, 2008
1996 Pontiac Sunfire SE 2.2L Stall VIN: 3G2JB24XTS
P0172: Fuel System Rich (Bank 1). Hi techs, got this 96 sunfire in with a complain of stalling after long period of driving. Usually happens when rolling down to the intersection and wait for red light. It would stall and restart right away. After it happens, it needs another half a day or so ...
September 30, 2008
2002 Ford F-150 XL 4.2L MIL Lamp on VIN: 1FTRF17262
P0172: rich bank1. dont know where "extra" fuel is coming from. re-set fuel trim and test drove. trim numbers right back to -14% after drive. all seems good thanks in advance for your help.
September 03, 2008
1998 Saturn SL2 1.9L MIL Lamp on VIN: 1G8ZK5270W
P0172: Fuel Trim System Rich (Bank 1). VEHICLE CAME IN W/PO172 BANK 1 RICH CONDITION, SPK PLUG GAP IS .040in. Fuel Pressure regulaotr and oxygen sensor has been changed at another shop. At idle vac is 19in and 2500 rpm vac is 21in. so valve timing is ok. Fuel pressure is 47 psi,i pinched the hose t...
September 03, 2008
2003 Chevrolet Express 3500 6.0L Poor Idle Quality, Stall VIN: 1GCHC39U53
P0172: Fuel Trim System Rich (Bank 1). help!!! this 3500 series van will not idle, fuel trims are in the negative -15 to -20. it is not the fuel pressure regulate, i pulled the vac line and no fuel at all. the idle will surge up and down and 90 percent of the time it will stall at idle. driving at ...
September 17, 2008
2002 Mercury Sable LS 3.0L MIL Lamp on, vacuum leak(?) VIN: 1MEFM55S42
P0172: rich bank 1. ... got a Mercury Sable 24 valve car with rich codes for bank 1 and 2 (PO172 and P0175). Codes appeared after another shop did a tune up which included removing the upper intake. Original complaint was for misfire codes and the shop replace all plugs and wires...
September 19, 2008
2001 Chrysler Town & Country (Van) Limited 3.8L Excessive Emissions VIN: 2C8GP64LX1
P0172: system rich. CHECKED ALL THE BASICS. FUEL TRIM GOES NEG INSTANTLY. EVEN WITH UPSTREAM O2 DISCONNECTED THE REAR ONE WILL READ 900mv, RICH. HAPPENS @IDLE & CRUISE. TRIM SEEMS TO GO NEG FASTER OFF IDLE. PLUGS ARE NOT FOULED. NOT SMOKING OUT TAIL PIPE. COMPUTER IS CONTROLI...
September 24, 2008
2001 Volkswagen Golf GL 2.0L MIL Lamp on VIN: 9BWBS61J31
P0172: rich condition. ... in 2 months ago with check engine light ON. Scan PCM retrieve 3 codes P0101,p0172,p0171, replace mass airflow sensor and perform maintainance tune up ( plugs, wires , fuel filter, air filter). Now car back again with P0172 rich condition indicated, dont ha...
September 24, 2008
1997 Volkswagen Jetta GLS 2.0L Poor Fuel Economy, MIL Lamp on VIN: 3VWSB81H6V
P0172: Sys Rich Bank 1. Oh how I love thus Farfenhugen... Has P0172 fuel trim rich code .. Fuel pressure 35 eng running..no leakdown even 20 min after shutoff. Eng temp. good 190-200. Fuel press reg. not spitting into vac. line. Tried reman MAF (Not fond of the reman part) no change....
September 26, 2008
1996 Pontiac Sunfire SE 2.2L Stall VIN: 3G2JB24XTS
P0172: Fuel System Rich (Bank 1). Hi techs, got this 96 sunfire in with a complain of stalling after long period of driving. Usually happens when rolling down to the intersection and wait for red light. It would stall and restart right away. After it happens, it needs another half a day or so ...
September 30, 2008