Traditional gasoline car fault

2006 Ford F150 4.2L with 253k Miles: Persistent PO171 and P0174 Codes After Multiple Repairs

Hello everyone, I'm currently troubleshooting a recurring issue on my 2006 Ford F15-0 with a 4.2L V8 engine and 253,000 miles. Despite replacing the ignition coil pack for the s...

F150 | P0171

2004 Ford Ranger 3.0L Automatic Fuel Too Rich - P0172/P0175 Code Diagnosis

My 2004 Ford Ranger with a 3.0L automatic engine runs normally until around 4000 RPM, where it begins to run too rich across both fuel banks. The OBD2 diagnostic shows a 'fuel t...

Ford Ranger | P0171

1997 Mazda B2300 P0171 Code: Hard Starting and Fuel Hesitation Diagnosis

I'm experiencing significant difficulty starting my 1997 Mazda B2300, and when it does start, the engine hesitates heavily during acceleration. This has become very frustrating ...

1997 Mazda B2300 | P0171

Honda Accord 92 Model Fuel Consumption Excessive: Causes and Solutions

What causes excessive fuel consumption in a 1992 Honda Accord? This issue may be linked to problems such as low fuel pressure, faulty fuel injectors with leaks, or malfunctionin...

92 Honda Accord | P0171

P0171 & P0174 OBD2 Codes in 2014 Mustang V6: Cold Air Kit Cause or System Fault?

I've owned my 2014 Mustang V6 for 9 months and have driven approximately 4,000 miles. I recently installed a cold air intake kit (which the manufacturer stated did not require a...

14 Mustang V6 | P0171

Hyundai Veracruz 0171 and 0174 Error Codes: Causes and Fixes for Misfire and Poor Engine Performance

My wife recently filled up the 2008 Hyundai Veracruz (173,000 miles) with gas, after which the vehicle began exhibiting rough idling, misfiring, and sudden power loss — commonly...

Hyundai Veracruz | P0171

Toyota Yaris Verso P0171 Check Engine Light: Diagnosis and MAF Sensor Fix

Hello everyone, I'm new to this forum but wanted to share a puzzling issue I've been experiencing with my 2000 Toyota Yaris Verso 1.3. The check engine light (CEL) came on whi...

Toyota Yaris Verso | P0171

OBD2 Fault Code P0135: Heater Control Circuit High Bank 2 Sensor 2 - Location on 2013 Dodge Grand Caravan

Where is the heater control circuit high bank 2 sensor 2 located on a 2013 Dodge Grand Caravan? This OBD2 fault code P0135 indicates an issue with the heater control circuit for...

H02S | P0171

Mazda B3000 P0171 and P0174 - Rough Idle and RPM Drop After Revving

My Mazda B3000 is experiencing a rough idle that drops by 500 rpm when the engine is revved. I have already replaced the fuel filter, mass airflow sensor (MAF), and two related ...

Mazda B3000 | P0171

Check Engine Light and VSC/TRAC Off on 2001 Lexus RX300 - How to Fix and Clear Fault Codes

My 2001 Lexus RX300 is showing a Check Engine light while driving. Two days ago, I refilled the fuel tank and suspect the gas cap was not fully closed. I have since tightened it...

Lexus RX300 | P0171

Toyota Matrix 2006 Oxygen Sensor 2 Bank 1 Failure: What Does 'Short Term Fuel Trim: NaN%' Mean? Diagnosing Without OBD2 Codes

I recently performed an OBD2 diagnostic on my 2006 Toyota Matrix using a new Bluetooth OBD2 interface, and it reported a failure for Oxygen Sensor 2 Bank 1. I'm seeking clarific...

Unknown | P0171

13 DTC codes Mitsubishi Montero 2002 which one is more urgent and how to repair

Hi, My name is Jonhny Homelus, glad to connect with you in this amazing community ! After doing a scan with a Innova 3160 b on my Mitsubishi Montero 2002 (Automatic, Engine: V6,...

Mitsubishi Montero | P0171

Nissan Vanette 2012 P0171 OBD2 Code: Engine Air-Fuel Ratio Issue

My 2012 Nissan Vanette is showing a P0171 diagnostic trouble code, indicating an engine air-fuel mixture too lean. This code typically points to issues such as a faulty oxygen s...

Nissan Vanette | P0171

2012 Chevrolet Cruze P0106, P0171, P0111, and P2270: O2 Sensor or MAP Sensor Replacement Needed? Impact on Turbo Performance

I'm experiencing multiple diagnostic trouble codes on my 2012 Chevrolet Cruze: P0106, P0171, P0111, and P2270. Should I replace the oxygen (O2) sensors or the Manifold Absolute ...

2012 chevrolet cruze | P0106

99 Chevrolet Silverado P0171 & P0449: Diagnosis and Fixes for Lean Mix Ratio and Evaporative Emission Vent Control Issue

My 1999 Chevrolet Silverado 4x4 with a 5.3L engine is showing two diagnostic trouble codes: P0171 (System Too Lean - Bank 1) and P0449 (Evaporative Emission System Vent Control ...

99 Silverado | P0171

Fault code PO171 2008 Audi A3

My EML came on two weeks ok , fault code system running to lean PO171 , just come back from my mechanic , had oil leak done and spark plugs , smoke test done and nothing ??? Any...

2008 Audi A3 | P0171

Toyota Corolla PO171 Code: Lean Condition with Rich Fuel Trim - Diagnosis & Fix

Hello everyone, I'm new to this forum and have a question about my Toyota Corolla. I've recently picked up a PO171 diagnostic code, which indicates a lean condition in the engin...

Toyota Corolla | P0171

2015 Hyundai Santa Fe P0171, P0174, and P2096 Codes: Diagnosis After O2 Sensor Replacement

Hello, I'm experiencing persistent engine trouble codes P0171 (System Too Lean Bank 1), P0174 (System Too Lean Bank 2), and P2096 (Post-Catalyst Fuel Trim System Too Lean Bank 1...

2015 Hyundai Santa Fe | P0171

2006 Chevy Classic P0171 Code: Car Won't Start After Stopping While Driving

My girlfriend was driving my 2006 Chevrolet Classic, and the car suddenly died while in motion. Shortly after, the check engine light came on briefly before turning off. When I ...

2006 Chevy Classic | P0171