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P0172 Diagnostic Trouble Code Discussion for June 2004

Fuel System Rich (Bank 1)


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Trouble Ticket Help Requests for DTC P0172
Help Request Posted
1999 Volkswagen Jetta GLS 2.0L MIL Lamp on VIN: 3VWSA29M3X
P0172: fuel trim bank 1 system too rich. the long term fuel trim value continues to climb after being cleared until MIL illuminates. O2 voltages are swapping. It actually seems lean more than rich. The MIL doesn't set as soon as the O2 monitor has completed, but soon after(1 or 2 trips). short term f...
June 02, 2004
1999 Toyota 4Runner SR5 3.4L Hesitation, MIL Lamp on VIN: JT3HN86R7X
P0172: Fuel System Too Rich (Bank 1). ... Emmissions 4Runner is setting code P0172 (rich condition). Scanner shows long term fuel trim at -35%. The exhaust readings shown in the repair history are pre-cat(we removed the precat sensor and put the probe in the O2 sensor hole). I don't have a fitting...
June 18, 2004
1996 Ford Windstar GL 3.8L MIL Lamp on VIN: 2FMDAS140T
P0172: Bank 2 lean. This Windstar failed an OBD II emission test. Prior to the lean codes I cleaned the EGR ports that were clogged. I had a code for restricted EGR flow. Cleaning of the ports cleared that code. I suspected a MAF problem but the voltage seems normal at idle (.6 V...
June 25, 2004
1996 Ford Windstar GL 3.8L MIL Lamp on VIN: 2FMDAS140T
P0172: Bank 2 lean. This Windstar failed an OBD II emission test. Prior to the lean codes I cleaned the EGR ports that were clogged. I had a code for restricted EGR flow. Cleaning of the ports cleared that code. I suspected a MAF problem but the voltage seems normal at idle (.6 V...
June 26, 2004
1999 Volkswagen Jetta GLS 2.0L MIL Lamp on VIN: 3VWSA29M3X
P0172: fuel trim bank 1 system too rich. the long term fuel trim value continues to climb after being cleared until MIL illuminates. O2 voltages are swapping. It actually seems lean more than rich. The MIL doesn't set as soon as the O2 monitor has completed, but soon after(1 or 2 trips). short term f...
June 02, 2004
1999 Toyota 4Runner SR5 3.4L Hesitation, MIL Lamp on VIN: JT3HN86R7X
P0172: Fuel System Too Rich (Bank 1). ... Emmissions 4Runner is setting code P0172 (rich condition). Scanner shows long term fuel trim at -35%. The exhaust readings shown in the repair history are pre-cat(we removed the precat sensor and put the probe in the O2 sensor hole). I don't have a fitting...
June 18, 2004
1996 Ford Windstar GL 3.8L MIL Lamp on VIN: 2FMDAS140T
P0172: Bank 2 lean. This Windstar failed an OBD II emission test. Prior to the lean codes I cleaned the EGR ports that were clogged. I had a code for restricted EGR flow. Cleaning of the ports cleared that code. I suspected a MAF problem but the voltage seems normal at idle (.6 V...
June 25, 2004
1996 Ford Windstar GL 3.8L MIL Lamp on VIN: 2FMDAS140T
P0172: Bank 2 lean. This Windstar failed an OBD II emission test. Prior to the lean codes I cleaned the EGR ports that were clogged. I had a code for restricted EGR flow. Cleaning of the ports cleared that code. I suspected a MAF problem but the voltage seems normal at idle (.6 V...
June 26, 2004