Traditional gasoline car fault

2002 Chevy Silverado 5.3L V8 P0171, P0174, and P0300 Fault Diagnosis and Fixes

I own a 2002 Chevrolet Silverado with a 5.3L V8 engine and approximately 117,000 miles. About a week ago, I noticed the vehicle would spit and sputter when starting, especially ...

02 Chevy Silverado | P0171

1997 GMC Suburban 5.7L Engine P0174, P0154, P0151, P1153 - O2 Sensor Issues and Lean Condition Diagnosis

Thank you to anyone who helps with this issue. I own a 1997 GMC Suburban with a 5.7L unleaded engine (R VIN), currently at 213,000 miles (driving approximately 40,000 miles ann...

GMC Suburban | P0151

Solved: OBD2 Error Codes 0171 and 0174 on 2000 Ford Taurus - Vacuum Leak Fix

I recently resolved a persistent check engine light issue on my 2000 Ford Taurus after discovering error codes 0171 and 0174. Initially, the system only displayed code 0174, fol...

2000 Ford Taurus | P0171

2000 Ford Explorer OBD P0171 and P0174 Codes Returning After Washing - Possible Airflow System Issue?

My 2000 Ford Explorer, with over 150,000 miles, has been showing up OBD fault codes P0171 and P0174 after being washed. I've previously reset the codes and the truck runs fine t...

2000 Ford Explorer | P0171

P0174 and P0171 Diagnostic Issues on 1998 Ford F-150 - Recurring After Fuel Filter Replacement

My 1998 Ford F-150 is showing diagnostic trouble codes P0174 and P0171. A mechanic inspected the vehicle, replaced the fuel filter due to a suspected clogged filter, and claimed...

98 f-150 | P0171

PO171 and PO174 Diagnostic Guide for 1998 Ford F-150: Causes and Next Steps

I recently purchased a 1998 Ford F-15

1998 F-150 | P0171

1998 Ford Explorer P0420 and P0174 Codes: Cold Start Issues, Misfire, and Potential MAF/Vacuum Leak Diagnosis

Hello! I'm experiencing two diagnostic trouble codes on my 1998 Ford Explorer: P0420 (Catalyst System Efficiency Below Threshold - Bank 1) and P0174 (System Too Lean - Bank 2). ...

98 Explorer | P0174

P0171 and P0174 Diagnostic & Fix for 2003 Ford Taurus SES - Idling Issues After MAF Replacement

I'm looking for help with my 2003 Ford Taurus SES (SES model) that has 79,000 miles. The car runs fine under normal conditions but exhibits rough idling or suddenly shuts off wh...

FORD TAURUS | P0171

P0171 and P0174 on a 2000 Ford Explorer 4.0L - How to Fix Vacuum Leaks and IMRC Valves

I'm looking for help with my 2000 Ford Explorer 4.0L engine that's throwing up codes P0171 and P0174. I've already cleaned the mass air flow (MAF) sensor and replaced several va...

2000 FORD EXPLORER | P0171

2004 BMW 325i P0171 and P0174 Lean Mixture Codes: Diagnosis and Fixes for Idle Issues

Hi everyone, I'm currently troubleshooting a persistent idle issue on my 2004 BMW 325i (2.5L V6, 105k miles) with an automatic Steptronic transmission. The car has started idl...

04 bmw 325i | P0171

1999 Mazda 626 V6 Missfire Diagnosis: Codes P0400, P1131, P0174 - EGR, Intake Gasket, or Injector Issues?

My 1999 Mazda 626 V6 is experiencing a severe missfire on cylinders #2 and #6. After testing with four different diagnostic scanners, I received codes P0400 (Exhaust Pressure Se...

1999 Mazda 626 | P0174

1996 Ford Taurus P0135, P0141, P0155, P0161 and P0174 Fault Codes: Causes, Sensor Locations & Fixes

I own a 1996 Ford Taurus with approximately 140,000 miles. Recently, my vehicle has triggered several OBD2 diagnostic codes: P0135, P0141, P0155, P0161, and most recently P0174....

Ford Taurus | P0135

2001 explorer sport, 4.0L, sohc, v6/86,000miles/ 0171, 0174

Ok, i know this is like a broken record on this website, but im having problems with the 0171 and 0174 codes on my explorer. I recently had these codes, plus the 0401 pop up....

2001 Explorer Sport | P0171

98 Ford E150 4.2L V6 with P0171 and P0174 Codes: Diagnosis and Fixes

Over the past few weeks, my 1998 Ford E150 4.2L V6 has been displaying both P0171 and P0174 OBD-II diagnostic codes. Initially, both codes appeared simultaneously, but now it's ...

Ford E150 | P0171

2005 Ford F-150 Power Loss and Unusual Codes P0300, P0171, P0174, P2196, P2198 After Cold Air Kit Installation

My friend recently asked me to check the engine codes on his 2005 Ford F-150, as it has started exhibiting poor performance and lack of power. The diagnostic scan revealed sever...

05 F-150 | P0171

P0171 & P0174 Fault Diagnosis on 1996 Mercury Sable 3.0L DOHC - After Fuel Pump and Filter Replacement

I own a 1996 Mercury Sable 3.0L V6 DOHC with approximately 109,500 miles. Recently, I encountered persistent check engine light issues along with driving symptoms after replacin...

96 Mercury Sable 3.0 DOHC | P0171

2002 Ford F150 4.2L V6 with P0171 and P0174 Codes: Poor Performance Under Load and in Wet Conditions

I own a 2002 Ford F150 4.2L V6 with persistent P0171 and P0174 OBD2 diagnostic codes. These have been present for some time, and despite multiple attempts to resolve them, the i...

2002 F150 4.2 V6 | P0171

P0171 and P0174 Diagnostic Help for 2001 GMC Sonoma 4.3L V6 - Lean Condition & Vacuum Leak Troubleshooting

I'm experiencing persistent P0171 (System Too Lean Bank 1) and P0174 (System Too Lean Bank 2) codes on my 2001 GMC Sonoma 4.3L V6 engine. I've pulled freeze frame data showing a...

2001 Sonoma | P0171