Traditional gasoline car fault

2006 Saturn Vue V6 Misfires: P0300-P0306 Diagnostic & Fix Guide

Hi, I'm looking for help with my 2006 Saturn Vue V6 that's showing misfire codes P0300 through P0306. The vehicle was running fine before I replaced the spark plugs, and after r...

2006 Saturn Vue | P0300

1997 Honda Accord P0170/P0171/P0301 Codes After EGR Cleaning - Low MPG and O2 Sensor Readings

I own a 1997 Honda Accord with a 2.2L engine. After cleaning the EGR ports, I started receiving P0170, P0171, and P0301 diagnostic trouble codes. I've ruled out vacuum leaks—tes...

97 Accord | P0170

2005 Dodge Ram 5.7 HEMI Misfire: P0301 and P0203 Fault Codes - Diagnosis and Fixes

Help needed! My 2005 Dodge Ram 5.7L HEMI engine is running roughly and shows fault codes P0301 (cylinder 1 misfire) and P0203 (injector issue on cylinder 3). I've already replac...

2005 Dodge Ram 5.7 hemi | P0203

2001 Toyota Camry P0301 Misfire Code: Diagnosis and Solutions for Cylinder 1

Hello, I own a 2001 Toyota Camry with a 4-cylinder engine, currently at 108,000 miles. The check engine light has been on, and the diagnostic code reading is P0301 (cylinder 1 ...

2001 Toyota Camry | P0301

2004 Audi A4 with O171, O300, O301-O304 Codes: How to Diagnose Lean Mix & Misfires Without Replacing MAF or O2 Sensors

I own a 2004 Audi A4 with 76,000 miles. No prior issues until yesterday when the check engine light came on unexpectedly after work. The stored fault codes are: - O171: System ...

2004 Audi A4 | P0171

1996 Ford Windstar 3.8L Misfire Codes P0300-P0306: Causes, Fixes & EGR Port Cleaning Guide

My 1996 Ford Windstar with a 3.8L engine is showing multiple misfire codes: P0300 (random misfire), P0301, P0304, P0305, and P0306. The vehicle sputters and runs poorly under lo...

1996 Windstar | P0300

1997 Volvo 960 Cylinder #3 Misfire: Coil Pack Failure Diagnosis and Solutions

Hi community, I've been experiencing a persistent cylinder #3 misfire on my 1997 Volvo 960. Despite replacing the coil pack with a new one just last week, the issue continues to...

1997 Volvo 960 | P0300

2003 Volkswagen Jetta 1.8T: P0300, P0301, P0302, P0303, P0304, P0106 - Multiple Cylinder Misfires and MAP/MAF Sensor Issues

Hi everyone, My 2003 Volkswagen Jetta 1.8T is showing multiple misfire codes: P0300 (random misfire), P0301 through P0304 (individual cylinder misfires), and P0106 (Manifold Ab...

03 Jetta 1.8T | P0106

2001 Mitsubishi Eclipse Spyder GT P0301 Misfire: Causes, Fixes & DIY Diagnosis

I own a 2001 Mitsubishi Eclipse Spyder GT with a 3.0L V6 engine and over 10,300 miles. About a week ago, I switched from regular to premium fuel, and two days later my car began...

2001 Mitsubishi Eclipse Spyder GT | P0301

2004 Ford F150 P0171, P0174, P0191, P0301 Fault Codes - Sputtering and Emission Light On

I recently drove my 2004 Ford F150 FX4 from San Angelo, Texas to Fort Hood, Texas — a 158-mile journey. During the drive, the truck began to sputter severely, as if it were abou...

2004 F150 | P0171

2004 Avalanche 5.4L P0300-P0301-P0303-P0305-P0307 Misfire Codes: Intake Manifold or Converter Issue?

I'm experiencing multiple misfire codes (P0300, P0301, P0303, P0305, P0307) on my 2004 Avalanche with a 5.4L V8 engine. A user suggested the intake manifold might be the issue—c...

avalanche | P0300

OBD2 Codes P0300 and P0301 on 2004 Dodge Ram 1500 4.7L: Causes, Diagnosis, and Fixes

I'm experiencing OBD2 diagnostic codes P0300 (random/multiple cylinder misfire) and P0301 (cylinder 1 misfire) on my 2004 Dodge Ram 1500 with a 4.7L V8 engine. The truck has app...

2004 dodge ram 1500 4.7 | P0300

2000 Jeep Grand Cherokee P0300-P0306 Misfire Causes: Worn Plugs, Injectors, or Cam Sensor?

2000 Jeep Grand Cherokee 4.0L engine, 139,000 miles. Recently purchased pre-owned; test drive was flawless. After driving approximately 20 miles off the lot, the check engine li...

2000 Jeep Grand Cherokee | P0300

1999 Honda Accord EX Misfire Diagnosis: P0300-P0304 and P1399 Codes Explained

I've reviewed numerous posts on this topic and tried various troubleshooting steps, but the issue persists. Vehicle: 1999 Honda Accord EX (standard model), 125,000 miles, regul...

99 Accord | P0300

1998 Subaru Forester PO301-PO304 Cylinder Misfire: Symptoms, Causes & Solutions

My 1998 Subaru Forester (2.5L DOHC, manual transmission) is showing intermittent cylinder misfire codes: PO301, PO302, PO303, and PO304 — appearing one at a time in sequence but...

SUBARU | P0300

1997 Ford Expedition 4.6L P0301 Random Misfire: Symptoms, Diagnosis & Fixes

My 1997 Ford Expedition XLT 4x4 with a 4.6L engine is experiencing intermittent rough idling and misfiring, indicated by the Check Engine Light blinking (P0301). The issue occur...

97 Ford Expedition | P0301

'05 Ford Taurus - Vulcan V6 Misfire

Need some help folks. The above listed vehicle has been having a continuous P0300 (most often) and various P030X codes. Occasioanlly I will display a P0174, this morning actuall...

05 Ford Taurus | P0300

2005 PT Cruiser Won't Start with P0301 Code - Fuel Pressure and Timing Belt Concerns

My wife's 2005 PT Cruiser has been sitting for a week after a camping trip. When we tried to start it, the car won't crank properly despite showing a P0301 diagnostic code. The ...

05 PT Cruiser | P0301