Traditional gasoline car fault

P0171 in Dodge truck

My 1996 Dodge 1500 has the "system to lean - bank 1" P0171 code. Truck has ~ 165K miles, 5.9L. I noticed some people mentioned the a MAF sensor, another post indicated a MAP se...

Dodge truck | P0171

P1441 and P0171 Diagnostic for 1997 Pontiac Grand Prix After Engine Replacement

After installing a new engine in my 1997 Pontiac Grand Prix, the onboard diagnostic system is showing both fault codes P1441 and P0171. What should be the first component to ins...

Pontiac | P0171

p0171, p0174, p0303, p0304 1999 Ford Windstar

These four codes came up during my emissions test. One seems to indicate possibly faulty wires or compression. Is there anything specific I should look for. My larges fear i...

1999 Ford Windstar | P0171

2003 Dodge Stratus P0128 and P0171 OBD2 Fault Codes - Solutions & Diagnostics

I own a 2003 Dodge Stratus with the 2.4L engine, currently at 42,000 miles. The check engine light is illuminated and displaying fault codes P0128 and P0171. I've already replac...

2003 STRATUS | P0128

1999 Ford Windstar 3.8L with O2 Sensor and DPF Emissions Codes: Diagnosing 0401, 0171, and 0172 After Intake Manifold Repair

I recently completed a full intake manifold gasket replacement on my 1999 Ford Windstar with the 3.8L engine at approximately 104,000 miles about one month ago. This repair succ...

99 3.8L Windstar | P0171

P0171 Fault Diagnosis for 2000 Pontiac Grand Prix with 3.8L Engine

I currently own a 2000 Pontiac Grand Prix equipped with a 3.8L engine and has accumulated 83,000 miles. The OBD-II diagnostic code P0171 has been detected. Based on common cause...

2000 Grandprix | P0171

2000 Ford Crown Victoria P71 - OBD2 Codes P0174 and P0171, Rough Idle After Start, MAF and EGR Replacement

I own a 2000 Ford Crown Victoria P71 with 60,800 miles. Previously used as a marked cruiser, it's now deployed as an EMS 'fly car' for rapid response. While driving to an emerg...

2000 Crown Victoria | P0171

2005-2010 Mustang 3.8L V6 P0171 Code: Causes, Fixes & DIY Solutions

I own a 2005-2010 Mustang with a 3.8L V6 engine and recently received a check engine light. The diagnostic scan shows fault code P0171 — indicating a lean air-fuel mixture in th...

Mustang | P0171

P0171 and P0174 Fault Codes on 2001 Cadillac Deville - Lean Mixtures and Idle Issues

I recently received check engine light activation accompanied by OBD-II fault codes P0171 and P0174 on my 2001 Cadillac Deville. The car has 62-000 miles on the odometer. I had ...

2001 Cadillac Deville | P0171

P0171 OBD2 Code on 1997 Mazda 626 2.0L: How to Fix Lean Mix & Pass Emission Test

Hi, I've had the check engine light on for two months, and my OBD2 scanner consistently shows fault code P0171 — indicating a 'System Too Lean' condition. My vehicle is a 1997 ...

mazda 626 | P0171

1996 Chrysler Town & Country P0171 Fuel Efficiency Issue - High Fuel Consumption

Hi everyone, I'm Frank from Puerto Rico. I own a 1996 Chrysler Town & Country with a recurring OBD2 fault code P0171. After clearing the code, it returns quickly and the vehicle...

96 Chrysler | P0171

1999 Mercury Cougar P0171 P0174 P0401 and P1405: Causes and Repair Guidance

I brought my 1999 Mercury Cougar (V6) to a friend's shop, where their scanner detected the following OBD2 fault codes: - P0171: System too Lean (Bank 1) - P0174: System too Lea...

99 Mercury Cougar | P0171

2001 Ford Windstar P0171 and P0176: Intake Manifold Gasket Failure & Lean Codes After Repair

I leased a 2001 Ford Windstar for two years before purchasing it, which gives it a solid maintenance history. The check engine light first appeared in late 2004. I drove the veh...

2001 Windstar | P0171

P0171 on '99 Ford Escort ZX2

By doing research I found out that it could possible be two things. 1.) MAF Sensor is dirty or not working. 2.) Vacuum leak downstream of the MAF Sensor. My question is, is this...

Ford Escort ZX2 | P0171

P0171 & P0174 tried lots of things, on coming 04 Tahoe

Ive tried cleaning the MAS with CRC MAS Cleaner, Throttle Body and still keeps on returning. Truck runs fine but I'd like to fix the problem when I could find the culprit. Deale...

04 Tahoe | P0171

P0171 & P0174 Diagnosis for 1999 Ford Explorer V6 - Oxygen Sensors, MAF, and Vacuum Leak Solutions

I own a 1999 Ford Explorer 4x4 with a 148,000-mile V6 OHV engine. The vehicle has been well-maintained: oil changes every 3,000 miles using synthetic oil, a K&N air filter insta...

Ford Explorer | P0171

2000 Ford Focus P0171 Code: PCV Valve Fix & Recalled Fuel Pump Connection?

My 2000 Ford Focus SE Sedan with a 2.0L SPI engine and 97,000 miles recently triggered a P0171 code after a fuel pump replacement under recall service. I've already replaced the...

ford focus | P0171