Traditional gasoline car fault

1996 Ford Windstar P0171 & P0174 Trouble Codes: Causes After Intake Manifold Gasket Replacement

I own a 1996 Ford Windstar with a 3.8L engine. My OBD2 scanner is displaying trouble codes P0171 (System Too Lean Bank 1) and P0176 (System Too Lean Bank 2). These codes appeare...

1996 FORD WINDSTAR | P0171

1999 Chevy Silverado 4.3L: Resolving P0327, P0171, and P0174 Codes After Multiple Repairs

I'm back with a persistent issue on my 1999 Chevrolet Silverado 1500 4.3L V6 with automatic transmission. Since August 2008, I've replaced the MAF sensor, air filter, knock sens...

1999 Chevy Silverado | P0171

2002 Chevy Silverado 5.3L P0106, P0107, P0300, P0171/P0174 - Post-Intake Gasket Replacement Still Shows Codes

Hello everyone, I've been experiencing rough idling in my 2002 Chevrolet Silverado (5.3L V8) specifically during cold mornings, but the engine runs smoothly once it warms up an...

02 Chevy Silverado | P0106

2004 Ford F150 P0171, P0174, P0191, P0301 Fault Codes - Sputtering and Emission Light On

I recently drove my 2004 Ford F150 FX4 from San Angelo, Texas to Fort Hood, Texas — a 158-mile journey. During the drive, the truck began to sputter severely, as if it were abou...

2004 F150 | P0171

97 Ford Expedition codes P0171 and P0174 not a PCV leak

I have 97 Expedition 5.4L 4x4 154k miles with 2 codes: P0171 and P0174. has new vacuum hose from intake to PCV, not leaking there. I don't hear any hissing fuel pressure is 30 l...

97 Ford Expedition | P0171

2000 Ford Focus O2 Sensor Faults: P0136, P0141, P0171 - Diagnosis and Solutions

Initially, my 2000 Ford Focus displayed only P0141 and P0171 fault codes. I replaced the spark plugs, spark plug wires, and one of the oxygen (O2) sensors. After retesting, the ...

2000 Ford Focus | P0136

1997 Ford Expedition P0171 and P0174 Diagnostic: Misfire in Cylinder 4 and Fuel System Issues

I have a 1997 Ford Expedition with a 5.4L engine. I recently replaced the spark plugs due to a misfire in cylinder #4. After replacing the fuel filter and clearing the codes usi...

1997 ford expedition | P0171

2001 Ford Windstar P0171 and P0174 OBD2 Fault Codes: Causes and Fixes

Hello everyone, I recently checked my engine fault codes and found P0171 and P0174. Can anyone help me understand what these codes mean and how to resolve them? Additionally, I...

2001 ford windstar | P0171

2001 Ford F150 V6 P0171, P0174, P0303 Fault Diagnosis: Vacuum Leak and Coil Pack Issues

My 2001 Ford F150 V6 is experiencing severe engine shuddering at lower RPMs, especially in gears 3 and 4 with a manual transmission. The vehicle has triggered OBD-II diagnostic ...

2001 F150 V6 | P0171

2002 Chevy Cavalier L61 2.2 Ecotec PO171 Code: Diagnosis and Fixes After Exhaust & Intake Mods

I'm currently troubleshooting a persistent PO171 code on my 2002 Chevrolet Cavalier equipped with the L61 2.2L Ecotec engine. I've installed several performance modifications, i...

02 Cavalier | P0171

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

P0171 Lean Mix Error in 1997 Chevrolet K3500 Vortec 454: Diagnosis and Solutions

I own a 1997 Chevrolet K3500 dually with a Vortec 454 engine that has been intermittently displaying P0171 (System Too Lean - Left Bank) for several months. The vehicle previous...

1997 Chev K3500 | P0171

P0171 and P0130 Trouble Codes - How to Fix in 2002 Chevy Cavalier

My 2002 Chevrolet Cavalier is displaying trouble codes P0171 (System Too Lean) and P0130 (O2 Sensor Circuit Malfunction - Bank 1 Sensor 1). I'm unable to locate the MAF sensor i...

2002 Chevy Cavalier | P0130

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

2002 Toyota Highlander P0171 Code: MAF Sensor Replacement & O2 Sensor Diagnosis Guide

My 2002 Toyota Highlander (6-cylinder, 73,000 miles) recently transitioned from a series of misfire codes—P0300, P0301, P0303, and P0305—to just the P0171 code after replacing t...

2002 Toyota Highlander | 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