Traditional gasoline car fault

1996 Ford Windstar DTC P0151, P0161, P0171, P0174: Causes and Fixes for Lean Mixtures and O2 Sensor Heater Circuit Faults

I own a 1996 Ford Windstar and am experiencing multiple Diagnostic Trouble Codes (DTCs): P0171 (System too lean, Bank 1), P0174 (System too lean, Bank 2), P0141 (O2 Heater Circu...

Ford Windstar | P0151

1999 Ford Explorer P0171/P0174 Codes: Fuel Pump Cycling Issue & Diagnosis

I'm experiencing intermittent starting issues with my 1999 Ford Explorer (4.0L V6). The vehicle consistently shows P0171 and P0174 diagnostic trouble codes, indicating a lean ai...

1999 Ford Explorer | P0171

1998 Ford E-250 4.2L Engine: P1506, P1537, P1131, P1151, P0340, P0171, P0174 - Troubleshooting Guide

My 1998 Ford E-250 with a 4.2L engine is experiencing a very rough idle that cycles between low and normal RPMs. The vehicle occasionally stalls or nearly shuts off during idlin...

1998 E-250 | P0171

Ford Ranger 2000 PO171 and PO174 Codes: Causes, Symptoms, and Fixes

I own a 2000 Ford Ranger with 175,000 miles and am consistently receiving OBD II diagnostic codes PO171 and PO174. The vehicle occasionally stumbles when driving uphill or while...

Ford Ranger | P0171

Ford Taurus 3.0L Duratec Engine P0171 and P0174 Codes: Diagnosis Tips and Normal Sensor Data Values

Hi, I'm currently troubleshooting a 1998 Ford Taurus with a 3.0L Duratec engine that is displaying OBD2 fault codes P0171 and P0174. I've already cleaned both the Mass Air Flow ...

Ford Taurus | P0171

P0171 and P0174 Error on 2001 Infinity I30 - Cold Start Engine Misses, Resolves with Warm-Up

I own a 2001 Infinity I30. After replacing a faulty coil pack that previously caused engine misfires, I now receive diagnostic codes P0171 and P0174. The issue manifests only wh...

2001 Infinity I 30 | P0171

P0171 and P0174 Fault Codes on 1998 Mazda B4000 - Engine Hesitation and Rough Idle

I took my 1998 Mazda B4000 to a garage, where they replaced the mass airflow sensor and fuel filter. Despite these repairs, the vehicle continues to show P0171 and P0174 diagnos...

98 mazda b4000 | P0171

Po174 Code in 1996 Ford F250 7.5L Diesel - Causes and Fixes After Fuel Tank Switch

HELP... I have a 1996 Ford F25-0 with the 7.5L diesel engine. The truck is regularly used to haul a fifth wheel every 7 weeks, covering about 400 miles round trip and runs very ...

F250 | P0174

P0174 Error in 2001 Nissan Sentra GXE: Can I Drive It Safely After Repairs?

Hi, I recently purchased a 2001 Nissan Sentra GXE and, during the pre-purchase inspection at Napa, an error code P0175 was detected. The previous owner had it fixed at Fireston...

Nissan Sentra | P0174

P0171 and P0174 Fault Codes on 1999 Ford F-150 4.2L Engine - Diagnosis and Fixes

I'm experiencing persistent P0171 and P0174 diagnostic trouble codes on my 1999 Ford F-150 with a 4.2L engine. I've already replaced the Mass Air Flow (MAF) sensor, but the code...

Ford F150 | P0171

1997 Mercury Cougar 4.6L V8 P0171 & P0174 Code: Diagnosis and Fixes After Intake Manifold Replacement

I own a 1997 Mercury Cougar with the 4.6L V8 engine, currently at approximately 134,000 miles. I've been experiencing persistent OBD2 diagnostic trouble codes P0171 (System Too ...

1997 Mercury Cougar | P0171

PO171 & PO174 Diagnostic - 2001 Ford E250 5.4L Engine Issues

We have thoroughly inspected and repaired the engine of our 2001 Ford E250 with a 5.4L V8 engine, including replacing the PCM, MAP sensor, fuel pump, intake gaskets, IAC valve, ...

2001 E250 | P0171

2000 Olds Bravada P0171 and P0174 Codes: Fuel Pump or MAF Sensor Issue? Car Won't Start

I own a 2000 Olds Bravada. Today, the check engine light came on, and I've been diagnosed with trouble codes P0171 and P0-than-174. Later that day, my car would not start at all...

olds bravada | P0171

2002 Ford Windstar P0171 and P0174 Diagnosis: Lean Mixtures, Vacuum Leak, MAF Sensor Issues

I've completed the TSB for intake gasket replacement, but it's not resolving my issue. I'm now completely stuck trying to diagnose this. When driving, the engine produces a whin...

2002 ford windstar | P0171

P0171 and P0174 OBD2 Codes on 2004 Jeep Grand Cherokee: Causes and Fixes

I recently performed a tune-up on my 2004 Jeep Grand Cherokee with a 4.7L V8 engine (approximately 56,000 miles). Before the service, the vehicle had a rough idle but no check e...

2004 Jeep Grand Cherokee | P0171