P0171 Diagnostic Trouble Code Discussion for January 2020
Fuel System Lean (Bank 1)
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| Help Request | Posted | |
| 2006 Chevrolet Colorado LT 2.8L MIL Lamp on VIN: 1GCCS14866 P0171: Fuel System Lean (Bank 1). This one is killing me (P0171). All issues are at idle, fuel trims are acceptable at cruise and under load -3 / 4 STFT and -3/ 3 LTFT. At idle the fuel trims will show 0 STFT and 5/ 8 LTFT at times which id not bad, but will intermittently go to 0/ 3 STFT ... |
January 08, 2020 | |
| 2016 Mazda CX-5 Touring 2.5L MIL Lamp on VIN: JM3KE2CY1G P0171: lean bank 1. ... on, code p0171 p0421 install a/f snsr per tsb 01-010/16 the light came back on p0171 only code. we had smoked system no leaks found, fuel pressure are good. the one thing that we keep seeing is ect 2 is -40 while ect 1 reading normal, ect 2 is the snsr... |
January 10, 2020 | |
| 2006 Chevrolet Colorado LT 2.8L MIL Lamp on VIN: 1GCCS14866 P0171: Fuel System Lean (Bank 1). This one is killing me (P0171). All issues are at idle, fuel trims are acceptable at cruise and under load -3 / 4 STFT and -3/ 3 LTFT. At idle the fuel trims will show 0 STFT and 5/ 8 LTFT at times which id not bad, but will intermittently go to 0/ 3 STFT ... |
January 15, 2020 | |
| 2004 Pontiac Bonneville GXP 4.6L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G2HZ54Y44 P0171: Fuel Trim System Lean. ... P0174 and P0300 stored. Started cold and found that even numbered cylinders misfired until vehicle went into closed loop, then smoothed out but lean exhaust on bank 2 remained (35+ on bank 2). Found intake duct boot torn and PCV tube cracked, replace... |
January 16, 2020 | |
| 2006 Mitsubishi Lancer Evolution MR 2.0L No Start, MIL Lamp on VIN: JA3AH86C26 P0171: Fuel System Lean (Bank 1). And another headache for a Friday, This client had towed this vehicle in from a local FIRESTONE shop (talking about how the clutch was 'sticking'). Tried to start the car and it was extremely difficult to start (had customer try and we barely got it st... |
January 17, 2020 | |
| 2006 Mitsubishi Lancer Evolution MR 2.0L No Start, MIL Lamp on VIN: JA3AH86C26 P0171: Fuel System Lean (Bank 1). And another headache for a Friday, This client had towed this vehicle in from a local FIRESTONE shop (talking about how the clutch was 'sticking'). Tried to start the car and it was extremely difficult to start (had customer try and we barely got it st... |
January 19, 2020 | |
| 2006 Volkswagen Beetle 2.5 2.5L Excessive Emissions, Surge, Misfire, MIL Lamp on VIN: 3VWRF31Y56 P0171: Systen too lean. ... This beetle came in with a stored P0171 fault, LTFT is 20%. Customer complaint was surging at 20-25 MPH and MIL on. So far I have blocked off the hoses to the valve cover and oil filter housing with no change, there is very little vacuum at the oil cap... |
January 21, 2020 |
