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P0172 Diagnostic Trouble Code Discussion for February 2014

Fuel System Rich (Bank 1)

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Trouble Ticket Help Requests for DTC P0172
Help Request Posted
2000 Saab 9-3 2.0L No Start, Cuts out, Starts and dies VIN: YS3DD78H1Y
P0172: Too rich bank 1. ... with a no start condition. The customer said that sometimes it would start and run fine. the only code we pulled was P0172, too rich. Short term fuel trim is -0.8% and long term is -25%. The car started for us once and ran fine. Fuel pressure at that time ...
February 10, 2014
2006 Pontiac Grand Prix 3.8L MIL Lamp on VIN: 2G2WP55276
P0172: Fuel Trim System Rich. Customer came in with CEL on found P0172 and performed basic checks found fuel pressure and volume to be normal all engine data looked normal, ECT was correct and HO2S was switching rapidly and would go low and high when induced. The LTFT however would be -20/...
February 19, 2014
2003 Mazda 6 i 2.3L Poor Fuel Economy, MIL Lamp on VIN: JM0GG10310
P0172: Adaptive Fuel Trim Too Rich (Bank 1). ... logging a P0172 code; intermittently. Long term fuel trim -25 and short term -22 is freeze data. This is the second time we are looking at this problem. When problem occurs car lacks power; like a bad maf. We were able to replicate problem when driven on f...
February 26, 2014
2007 Ford F-250 Super Duty XLT 5.4L MIL Lamp on VIN: 1FTNF20547
P0172: rich B1. Key on B1S1 voltage reads 1.46 volts. Tried new sensor (just plugged in) reading was the same. also the same with sensor unplugged. Other 3 sensors read about .5 koeo. I backed B1S1 wire out of pcm connector, reading still 1.46v on scanner. Have decided it nee...
February 27, 2014