Traditional gasoline car fault

2002 GM 5.3L Tahoe P0171 and P0174 Fault: Fix with Intake Manifold Gasket Replacement

I was experiencing recurring P0171 and P0174 engine diagnostic codes on my 2002 GMC Tahoe with a 5.3L V8 engine. After replacing all four oxygen sensors, the issue persisted. Th...

GM | P0171

2002 GM 5.3L Tahoe Oxygen Sensor Codes 0171 & 0174: Fix with Intake Manifold Gasket Leak Solution

I was experiencing recurring service engine light codes 0171 and 0174 on my 2002 GM 5.3L Tahoe. I replaced all four oxygen sensors, but the issue persisted. After researching fo...

GM | P0171

1997 Ford Ranger Fault Codes P0153, P0171, P0172, P0401, P1443, P0302: Diagnosis and Fixes

I'm experiencing multiple OBD-II fault codes on my 1997 Ford Ranger: P0153, P0171, P0172, P-0401, P1443, and P0302. I need guidance on where to start troubleshooting. - P0153: ...

1997 Ford Ranger | P0153

96 Dodge Intrepid 3.5L P0171 Code: Rich Running, Black Smoke, and Fuel Trim Issues

Jeff, I own a 1996 Dodge Intrepid with the 3.5L engine that is exhibiting a persistent P0171 code indicating a lean mixture condition — but in reality, the vehicle runs very ric...

96 Dodge Intrepid | P0171

2000 Dodge Dakota 4.7L with O171 Code: Poor Fuel Economy and Foul Exhaust Smell

My 2000 Dodge Dakota with a 4.7L engine has recently experienced a significant drop in fuel efficiency—down by 25%—despite having 95,000 miles on the odometer. The vehicle now a...

2000 Dodge Dakota | P0171

1997 Mercury Cougar P0430, P0171, P0174 OBD-II Codes: Engine Stalls on Start, Fuel Trim Issues

I own a 1997 Mercury Cougar and am experiencing persistent OBD-II diagnostic trouble codes: P0430 (catalyst system efficiency below threshold), P0171 (system too lean), and P017...

OSD-II | P0171

Mazda 626 1996 P0171 and P1744 Fault: Oxygen Sensor & Torque Converter Clutch Solenoid Issues

Hi everyone, I recently purchased a used 1996 Mazda 626 LX (2.2L) with approximately 86,070 miles and an automatic transmission. Over the past year, I've driven only about 4,00...

mazda | P0171

P0133 and P0171 Diagnosis for 1999 Dodge Dakota 4x4 with 83K Miles

Hello everyone, great community here! My name is Brian, and I'm currently experiencing several issues with my 1999 Dodge Dakota. Vehicle Details: - Model: 1999 Dodge Dakota - D...

1999 Dodge Dakota | P0133

1996 Dodge Ram 1500 5.2L Engine PO171 Code: Diagnosis and O2 Sensor Voltage Guide

I'm experiencing a recurring PO171 code on my 1996 Dodge Ram 1500 with the 5.2L V8 engine. The code clears quickly after resetting, suggesting an intermittent issue. I've identi...

1996 dodge truck 5.2l | P0171

1999 Mazda 626 P0171 Code: Fix for Lean Mixture Bank 1 Due to EGR Valve Gummy Deposits

I've been troubleshooting this issue for a while — my 1999 Mazda 626 is showing a P0171 code indicating a lean mixture in bank 1. I started by cleaning the MAF sensor, which was...

1999 mazda 626 | P0171

98 Ford F150 P0171 and P0174 Codes: Causes, Fixes, and Common Solutions

I'm experiencing P0171 and P0174 diagnostic trouble codes on my 1998 Ford F150 with a 4.6L engine and 150,000 miles. I've already replaced both oxygen (O2) sensors, changed the ...

98 F150 | P0171

1999 Honda Accord VTEC P0171 and P0170 Fault: Causes, Diagnosis, and DIY Fix for Lean/Rich Condition

I recently purchased a 1999 Honda Accord with 178,000 miles on the odometer. Shortly after buying it, the Check Engine Light activated. A scan tool revealed only two fault codes...

1999 Accord VTEC | P0170

2000 Mazda Protege P0171/P0771/P0741 Fault Diagnosis and DIY Fix Guide

Hello, I own a 2000 Mazda Protege 1.6L automatic model. About two weeks ago, my check engine light came on and the overdrive (O/D) indicator started flashing intermittently. I t...

Mazda Protege | P0171

2003 GMC Suburban 5.3L Flex Fuel: P0171 & P0174 Codes - Diagnosis and Fix

I recently purchased gasoline at a 'new to me' station overnight, and the next morning my check engine light came on. The OBD2 scan revealed codes P0171 (Rich Mix Bank 1) and P0...

2003 Suburban | P0171

2002 Ford F-150 XLT 4.6L Idle Problems: P0171 and P0174 Diagnosis & Fix (Budget-Friendly Solutions)

My 2002 Ford F-150 XLT with a 4.6L Triton engine has developed serious idle issues about two weeks ago. The check engine light came on, and after the engine warms up, it begins ...

2002 XLT 4.6 | P0171

Silverado running rich at idle

I have a 1996 Chevy Silverado PU with a 5 L V8. Recently put in a Jasper long block. Have about 5K miles on it and am having lots of issues with rough running when warm. When co...

Silverado | P0171

P1400, P0171, P0302, P0303 Fault Diagnosis - 2000 Ford Ranger 3.0L V6 Engine

Hello, I own a 2000 Ford Ranger with a 3.0L V6 engine and am experiencing multiple diagnostic trouble codes: P1400, P0171, P0302, and P0303. Symptoms include significant loss ...

2000 Ford Ranger | P0171

P0171 Code on 1997 Dodge Intrepid: Fuel System Running Lean Bank 1 - Diagnosis and Fixes

I'm seeking help with a persistent P0171 code on my 1997 Dodge Intrepid with a 3.5L 24-valve engine. I've been struggling to pass emissions tests, and the issue has evolved over...

1997 Dodge Intrepid | P0171