Traditional gasoline car fault

2000 Ford Lightning P0171 AND P0174

Replaced MAF Replaced fuel filter Replaced all coil packs Replaced EGR Checked O2's on both sides. Voltage is good Checked all vacuum hoses Used X2 cans carb cleaner to check fo...

2000 Ford Lightning | P0171

1996 Chevrolet 5.7L Engine Random Misfire and Running Lean: P0300, P0132, P0134, P0171 Diagnosis and Fixes

I own a 1996 Chevrolet with a 5.7L V8 engine and am experiencing persistent issues including random misfires (P0300), O2 sensor circuit high voltage (P0132), insufficient activi...

1996 chevrolet 5.7 | P0171

1999 Ford F-150 OBD2 Codes P0171 and P0174: Diagnosis and Fixes

I'm experiencing OBD2 diagnostic codes P0171 and P0174 on my 1999 Ford F-150. These are engine lean mixture codes, indicating the air-fuel ratio is too lean in both the left and...

99 Ford F150 | P0171

P0171 & P0174 Diagnostic for 2001 Ford F150: Lean Codes, High IAT, and Acceleration Issues

This morning I checked my diagnostic trouble codes (DTCs) after noticing my 2001 Ford F15-0 was running sluggishly the previous day. The scan tool revealed both P0171 and P0174,...

2001 F150 | P0171

1999 Toyota 4Runner V6 Engine P0171 Code: Diagnosis and Solutions

I'm experiencing a recurring P0171 code on my 1999 Toyota 4Runner with the V6 engine. I've already performed several troubleshooting steps including cleaning the MAF sensor, che...

1999 Toyota 4 Runner | P0171

P0171, P0174, P0102 Fault Codes on 1999 Windstar LX 3.8L - Low Fuel Efficiency and Diagnosis Tips

The check engine light is on, and I'm seeing three diagnostic trouble codes: P0171 (System Too Lean Bank 1), P0174 (System Too Lean Bank 2), and P0102 (Mass Airflow Sensor Circu...

1999 Windstar LX | P0102

P0171 OBD2 Fault in 2006 Pontiac Montana SV6 (3.5L V6) - Causes and Diagnostics

My 2006 Pontiac Montana SV6 with a 3.5L V6 engine has recently started triggering the P0171 diagnostic trouble code — System Too Lean Bank 1. Notably, this occurred without any ...

2006 Pontiac Montana SV6 | P0171

2000 GMC Silverado 5.3L P0171 P0174 P0420 Fault: Diagnosis & Solutions After Intake Gasket Replacement

My 2000 GMC Silverado with a 5.3L V8 engine is currently showing persistent OBD-II fault codes: P0171 (System Too Lean Bank 1), P0174 (System Too Lean Bank 2), and P0420 (Cataly...

2000 Silverado | P0171

2002 Mazda Protege P0171 Code: System Too Lean (Bank 1) - Diagnosis & Fixes

Hi everyone, I'm having an issue with my 2002 Mazda Protege. After scanning the vehicle, I've picked up a P0171 diagnostic trouble code indicating a 'System Too Lean' condition ...

2002 mazda protege | P0171

P0171 Fuel Lean Code on 2008 Pontiac Vibe - Diagnosis and Fixes

Hello, I'm not very experienced with cars, but I'm reaching out for help. I have a 2008 Pontiac Vibe with 80000 km. The Check Engine Light (CEL) came on, and after taking it to ...

2008 Pontiac Vibe | P0171

Black Smoke & P0171 Code on 1999 Toyota RX 300: Diagnosis and Solutions

Hello everyone, I'm experiencing black smoke from the exhaust and a strong foul odor coming from my 1999 Toyota RX 300. The vehicle is showing OBD2 fault code P0171 — System To...

Unknown | P0171

1997 Ford Probe 4-Cylinder with Codes P0133, P1652, P0400, P1410, and P0171 - Troubleshooting Guide

My daughter's 1997 Ford Probe 4-cylinder vehicle is experiencing intermittent rough idle, stalling, and a lack of power during acceleration. After visiting AutoZone, we retrieve...

1997 Ford Probe | P0133

P0171 Fault on 2002 Nissan Maxima: How to Fix System Too Lean Bank 1

I'm experiencing a P0171 code (System Too Lean Bank 1) on my 2002 Nissan Maxima. My husband and I have already cleaned the MAF sensor and inspected all fuel and vacuum lines. We...

2002 Nissan Maxima | P0171

02 Silverado P0171/174 New MAF Installed -No start

I have a 2002 Silverado with 5.3 (Non-flex) that start to cough and buck the truck late last week.When driving see to be in the 30-40 speed range. Started to troubleshoot Satur...

Silverado | P0171

P0171 and P0174 Fault Codes on 1997 Ford F250 4x4 7.5L 460ci - Vacuum Leak Diagnosis

This is the second time I've encountered DTCs P0171 and P0174 on my 1997 Ford F250 4x4 with a 7.5L 460ci engine. The first instance occurred about two years ago when Ford replac...

1997 Ford F250 4x4 7.5l 460 ci | P0171

P0171 to p0172 2003 trailblazer 4x4 6 cyl

So any ideas ??? Thanks

2003 Trailblazer 4x4 6 cyl | P0171

2001 Ford F-150 4.2L V6 - OBD2 P0171 & P0174 Codes: Lean Mixtures, Low Idle, Knocking After MAF Replacement

My 2001 Ford F-150 2WD with a 4.2L V6 engine and 5-speed manual transmission has developed check engine light issues. The OBD2 diagnostic tool returned both P0171 (System Too Le...

2001 F-150 | P0171