Traditional gasoline car fault

2000 Mazda Protege P0171 and P0442 Diagnosis: How to Fix Lean Mix & EVAP Leak at 150,000 km

I own a 2000 Mazda Protege with a 1.6L engine and 5-speed manual transmission, currently at 150,000 kilometers. The vehicle is displaying OBD-II diagnostic codes P0171 (System T...

Mazda Protege 2000 | P0171

P0171 Fault in 1997 Dakota 5.2L V8 with Automatic Transmission - Intake or Vacuum Leak Diagnosis?

I recently started experiencing engine jerking and a significant drop in fuel mileage after several hours of towing my trailer. This only occurs during extended use, and I've no...

1997 Dakota | P0171

P0171 and P0174 Fault Diagnosis for 2001 V6 3.8L Camaro - Vacuum System Issue?

Some suggest replacing the brake booster and check valve as part of the vacuum system to resolve the P0171 and P0174 lean mixture codes in my 2001 V6 3.8L Camaro. While this may...

2001 V6 3.8 Camaro | P0171

P0171 and P0174 2001 V6 3.8 Camaro

I have replaced the fuel injectors, fuel filter, spark plugs, air filter and the fuel pump. Now that all that is out of the way here is my problem. First I started getting a P0...

2001 V6 3.8 Camaro | P0171

PO171 System Too Lean Diagnosis - 2002 Chevrolet Cavalier 2.2L Engine

2002 Chevrolet Cavalier with a 2.2L 4-cylinder engine, currently at 100,102 miles. My girlfriend's car just passed the 100,000-mile mark last week and suddenly stalled about on...

2002 Chevrolet Cavalier | P0171

F97 Ford Aerostar 4L Engine P0171 Code: Diagnosis and Troubleshooting Guide

I own a 1997 Ford Aerostar with the 4.0L V6 engine and 145,000 miles on the odometer. Recently, during an emissions inspection, my vehicle triggered a P0171 (System Too Lean Ban...

F97 Ford Aerostar | P0171

1999 Mazda Protege ES P0171 and P0420: How to Fix Lean Condition Before Replacing Converter

I own a 1999 Mazda Protege ES with a 1.8L engine, automatic transmission, and approximately 156,000 miles. When I first purchased the vehicle, it displayed a P0171 code (System ...

1999 mazda protege es | P0171

P0171 and P0174 Diagnostic for 2001 Ford Windstar with 3.8L V6 Engine

We own a 2001 Ford Windstar equipped with a 3.8L V6 engine, currently at approximately 150,000 miles. Recently, we've been experiencing recurring check engine light activations ...

2001 Ford Windstar | P0171

OBD2 Code P0171 on 1999 Pontiac Montana 3.4L: Is It Bank-Specific? Vacuum Leak Diagnosis

I own a 1999 Pontiac Montana with a 3.4L engine and am currently experiencing OBD2 diagnostic code P0171 (Fuel Trim Bank 1 Too Lean). I've seen many discussions about this code ...

Pontiac Montana | P0171

P0171 OBD2 Code on 2000 Mazda 626: Causes and Fixes Explained

I own a 2000 Mazda 626 with a 4-cylinder engine and am struggling to diagnose the root cause of an ongoing issue. My OBD-II scanner shows only one fault code: P0171 — 'System To...

Mazda 626 | P0171

P0174 and P0171 Fault Codes in 1995 Ford Windstar - Check Engine Light, Fuel Smell, Rough Idle

I own a 1995 Ford Windstar that has been displaying a persistent check engine light. I've already replaced the oxygen sensor, fuel filter, and air filter. The vehicle now emits ...

1995 Windstar | P0171

P0171 and P0174 Diagnosis for 1997 Ford Ranger V6 4.0L: Lean Mixtures, Idle Issues, and Vacuum Leak Solutions

Hi there, My OBD2 scanner shows P0171 (System Too Lean Bank 1) and P0174 (System Too Lean Bank 2) on my 1997 Ford Ranger with a 4.0L V6 engine. The engine runs lean on both int...

97 Ford Ranger V6/4L | P0171

Land Rover Discovery II P0171, P0174, P1172, P1175, P0734 Codes: Diagnosis and Fixes

My Land Rover Discovery II is displaying multiple OBD-II diagnostic codes: P0171, P0174, P1172, P1175, and P0736. I've researched the meanings of these codes but am missing spec...

Land Rover | P0171

1997 Ford Ranger V6 4L: P0171 and P0175 O2 Sensor Codes with No Feedback from All Six Sensors

Hello, I recently purchased a 1997 Ford Ranger with a V6 4.0L engine, which started showing up two diagnostic trouble codes: P0171 and P0174. After using an AutoEnginuity OBD2 ...

97 Ford Ranger | P0171

P0171 and P0174 followed by P0300 - Diagnosis and Repair for 2000 Isuzu Rodeo

The 2000 Isuzu Rodeo is experiencing trouble codes P0171, P0174, and subsequently P0300. These codes indicate lean air mixture in the fuel system (P0171 and P0170) and random mi...

2000 Isuzu Rodeo | P0171