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P1171 Diagnostic Trouble Code Discussion for February 2006

Fuel System Lean During Acceleration

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Trouble Ticket Help Requests for DTC P1171
Help Request Posted
2003 Land Rover Discovery SE 4.6L MIL Lamp on VIN: SALTY16413
P1171: system too lean bank 1 additive injector adaptive fueling lean limit exceeded left bank. This Land Rover is a new client who just moved here. A previous shop replaced the MAF and left oxygen sensor very recently for what she describes as the same symptom. The engine idles rough. We read codes and checked for vacuum leaks and didn't find any. We w...
February 13, 2006
1999 Volvo V70 X/C AWD 2.4L Poor Idle Quality, MIL Lamp on VIN: YV1LZ56D9X
P1171: Fuel trim. Car runs good although at times it blows black smoke. It has the MIL light on always. I can clear codes and in about 100 miles they return. Costomer states that if he leaves the car idle to warm up for about ten minutes when he returns and drives away it will ...
February 14, 2006