Traditional gasoline car fault

1999 Ford Explorer P0171 and P0174 Codes: MAF Cleaned, Vacuum Check Complete, EGR Solenoid Still Shows Pulsating Vacuum at Idle

I recently cleaned the Mass Air Flow (MAF) sensor and performed a thorough vacuum leak check on the intake system—both tests came back negative. However, the vehicle continues t...

1999 Ford Explorer | P0171

OBD2 Code P0171 on 2002 Dodge Ram: How to Fix This Fuel Trim Error

I'm experiencing OBD2 diagnostic code P0171 on my 2002 Dodge Ram. What steps should I take to resolve this issue? The code indicates a lean fuel mixture in the engine, which can...

Dodge Ram | P0171

1998 Ford F250 5.4L P0171 and P0174 Codes: Vacuum Leak Diagnosis & Intake Gasket Repair Guide

I own a 1998 Ford F250 Light Duty 4x4 with a 5.4L V8 engine, and recently encountered OBD2 diagnostic codes P0171 (Bank 1 Lean) and P0174 (Bank 2 Lean). These lean conditions ar...

98 F250 | P0171

Nissan Xterra V6-3.3L P0328 and P0171 Trouble Codes: Detonation, Poor Fuel Economy, and A/C Issue After Knock Sensor Replacement

Hello everyone, I recently had my Nissan Xterra V6-3.3L diagnosed and found two pending trouble codes: P0328 and P0171. I replaced the knock sensor as recommended, but the prob...

Nissan Xterra V6-3.3L | P0171

2003 Ford Ranger P0171 Fault Code: Estimated Repair Cost and Diagnosis

What is the estimated repair cost for a P0171 fault code on a 2003 Ford Ranger? The vehicle displays this diagnostic trouble code, which indicates a lean air-fuel mixture in the...

2003 ford ranger | P0171

2002 Ford Taurus P1131, P0316, P0303, P0174 & P0171 Codes: Misfire, Lean Mixtures and Poor Acceleration Diagnosis

I'm experiencing multiple engine trouble codes on my 2002 Ford Taurus: P1131, P0316, P0303, P0174, and P0171. The check engine light flashes intermittently while driving instead...

2002 Ford Taurus | P0171

2001 Jeep Cherokee OBD2 Codes PO136, PO130, PO138, PO751, PO455, PO740 - Troubleshooting Guide

I own a 2001 Jeep Cherokee with the check engine light on for an extended period. Using an OBD2 scanner, I've retrieved six distinct fault codes: 1) PO136 – Oxygen Sensor Heat...

2001 Jeep Cherokee | P0171

2002 GMC Sierra 1500 Failed Inspection: OBD2 Codes P0171 and P0174 with Recurring P0327 Knock Sensor Issue

I have a 2002 GMC Sierra 1500 that failed state inspection due to OBD2 fault codes P0171 and P0174. I replaced the intake manifold gasket, but the check engine light came back o...

2002 gmc sierra | P0171

2005 Ford Focus P0171 Too Lean: K&N Air Filter Causes and MAS Sensor Issues?

I purchased a 2005 Ford Focus ZXW in 2008 and have experienced no issues until last year, when I replaced the factory air filter box with a K&N cleanable air filter. Since then,...

2005 ford focus | P0171

2003 Ford F-150 V6 4.2L with P0171 and P0174 OBD2 Codes: Diagnosis and Repair Advice

I'm experiencing a persistent engine light on my 2003 Ford F-150 with a 4.2L V6 engine, showing diagnostic trouble codes P0171 and P0174. The previous mechanic replaced the airf...

2003 Ford F150 | P0171

2005 Ford F150 with OBD2 Codes P0171, P0174, and P0353 - Poor Acceleration and Lean Mixtures

I have a 2005 Ford F15

2005 ford f150 | P0171

P0171 and P0420 Fault Codes on 2004 Honda Accord LX 4-Cylinder

I own a 2004 Honda Accord LX with a 4-cylinder engine. A few days ago, the check engine light came on during an extremely cold day, with temperatures reaching -33°F. Since then,...

2004 Honda Accord | P0171

2003 Chevrolet Avalanche P0101 P0171 P0174 Fault: Rough Idle, Poor Mileage After MAF Replacement

My 2003 Chevrolet Avalanche with a 5.3L V8 engine is showing persistent fault codes P0101 (MAF Sensor Performance), P0171 (Lean Bank 1 Fuel Trim), and P0174 (Lean Bank 2 Fuel Tr...

2003 Avalanche | P0101

2002 Ford F-150 P0171 Code Reappears in Cold Weather - Fix & Diagnosis

2002 Ford F-150 SuperCrew 4x4, 5.4L Triton V8 engine, 160,000 miles. The P0170 (Fuel Trim System Lean Bank 1) code has reappeared after cold weather conditions in Wisconsin. Th...

2002 F-150 | P0171

2005 Chevrolet Tahoe 5.3L: P0107, P0171, and P0332 Fault Codes - Common Cause & Repair Priority

Hello everyone, I recently diagnosed a 2005 Chevrolet Tahoe with a 5.3L V8 engine and found three diagnostic trouble codes: P0107, P0171, and P0332. The P0332 code initially c...

2005 tahoe 5.3 | P0107

2002 Ford F150 Check Engine Light with Codes P0401, P0171, and P0174 - Causes and Repair Costs

I recently purchased a used 2002 Ford F150 less than a month ago, and the check engine light has come on. The vehicle is displaying three diagnostic trouble codes: P0401, P0171,...

2002 ford f150 | P0171

2001 Ford Focus SOHC Vehicle with P0136, P0171, and P0000 OBD2 Diagnostic Codes - Solutions and Fixes

I'm experiencing persistent Check Engine Light (CEL) errors on my 2001 Ford Focus with SOHC engine configuration, specifically receiving diagnostic trouble codes P0136, P0171, a...

2001 Ford Focus | P0000