Traditional gasoline car fault
Search fault code and browse forum case posts.
P0300 Random Misfire Fix: 1999 GMC Safari Van with 208K Miles
I recently diagnosed and resolved a persistent random/multiple misfire issue on my 1999 GMC Safari van, which is showing P0300 fault code. The vehicle has 208,000 miles on the o...
1999 GMC Safari van | P03002003 VW Passat P0171 P0300 P0301 P302 P304 P411 - Hesitation at 20-30 mph and Misfire Codes After Recent Repairs
My mother drives a 2003 VW Passat 1.8L 4-cylinder model, which is currently displaying multiple OBD-II diagnostic codes: P0171 (Rich or Lean Fuel Mix), P0300 (Random/Multiple Cy...
2003 VW Passat | P01711998 Chevy S-10 P0300 Random Misfire and Exhaust Backfiring - Diagnosis Tips
Experiencing a P0300 random misfire and noticeable backfiring from the exhaust pipe on my 1998 Chevrolet S-10. The engine runs unevenly, especially under load, with occasional l...
98 S-10 | P0300P0171 P0300 P0332 Fault Codes - 2002 Chevrolet Silverado Starting Issue
I recently received the following OBD2 diagnostic codes on my 2002 Chevrolet Silverado: P0171 (Rich Air-Fuel Mixture), P0300 (Random Misfire), and P0332 (Knock Sensor Circuit Ma...
2002 Chevy Silverado | P01712005 Chevrolet Malibu P0300 and P0420 Codes: Causes and Solutions at 176k Miles
I own a 2005 Chevrolet Malibu with 176,000 miles. After the engine warms up, it consistently stalls at or below 3,000 RPMs. The vehicle is showing two diagnostic trouble codes: ...
2005 Malibu | P03002006 Hummer H3 Check Engine Light with P0017, P0171, P0300, and P2176 Codes - Diagnosis & Fixes
My 2006 Hummer H3 is running very rough and the check engine light has activated. The onboard diagnostic system shows multiple fault codes: P0017, P017,
2006 Hummer H3 | P0017P0300 and P0171 Codes on 2003 Chevrolet Tahoe 5.3L Flex-Fuel: Diagnosis and Solutions
I'm looking for help diagnosing a persistent P0300 misfire code on my 2003 Chevrolet Tahoe with the 5.3L flex-fuel engine (Z VIN). The vehicle has been throwing a P0300 code, ac...
2003 chevrolet tahoe | P03001997 Chevy Silverado 1500 Multiple Trouble Codes: P0157, P0300, P1380 with Dim Tail/Reverse Lights After Fuel Pump Replacement
My son's 1997 Chevrolet Silverado 1500 (5.7L V8 engine) has developed multiple diagnostic trouble codes after a recent fuel pump replacement: P0157 (O2 Sensor Bank 2, Sensor 2),...
1997 Chevy 1500 Silverado | P0157Nissan 350z 2004 - Fault Codes P0300, P1615, P0132, P0152, and P0128 After Cat Converter and ECU Replacement
I recently replaced the catalytic converter with an aftermarket unit and upgraded to a new ECU. The vehicle starts smoothly but exhibits hesitation during driving. I have alread...
Nissan 350z | P01322004 Ford F150 5.4L Misfire Diagnosis: P0305, P0304, P0300, P0316, P0171 After Spark Plug Replacement
After replacing all spark plugs in my 2004 Ford F150 5.4L engine, the truck began running significantly worse and triggered multiple OBD-II diagnostic codes: P0305 (cylinder 5 m...
04 f150 5.4l | P03002000 Mazda MPV Misfire Code and Two Monitors Inspection Requirement
Does a misfire code with two monitors incomplete result in inspection failure? I've reviewed the New York City state requirements and found that for vehicles manufactured before...
2000 mazda mph | P0300P0300 & P0302 Fault Diagnosis for 2012 Chevy Traverse 3.6L - Spark, Fuel or Mechanical Issue?
I'm experiencing a persistent misfire on cylinder #2 of my 2012 Chevrolet Traverse with a 3.6L engine, indicated by fault codes P0300 and P0302. I've already replaced the spark ...
2012 Chevy Traverse | P0300P0300 and P0128 Fault Codes - 2002 GMC Silverado 4.3L V6 Diagnosis
The vehicle is displaying fault codes P0300 (Random Misfire) and P0128 (Coolant Temperature Sensor Circuit Malfunction). For the random misfire (P0300), inspect spark plugs for ...
2002 Silverado | P03002008 Hyundai Tiburon GS 2.0L OBD II Codes P0170, P0171, P0300, P0301, P0302, P0303 - Engine Hesitation Diagnosis
Hi, I own a 2008 Hyundai Tiburon GS with a 2.0L engine. Recently, my car has been displaying several OBD II diagnostic codes: P0170, P0171, P0300, P0301, P0302, and P0303. After...
2008 hyundai tiburon gs 2.0 | P01702005 Ford F150 Cold Start Misfire & Lean Codes: PO171, PO174, PO302 Fix Guide
I own a 2005 Ford F150 with a 5.4L V8 engine and 150,000 miles. Over the past month, I've experienced recurring cold-start misfires that only resolve after the engine warms up. ...
2005 Ford F150 | P03001997 Chevrolet C1500 4.3L Manual Transmission P0300 Misfire - Cold Weather Hesitation After Replacing All Spark Components
My 1997 Chevrolet C1500 with a 4.3L V6 manual transmission is throwing a P0300 code indicating multiple cylinder misfires. The truck runs smoothly in neutral and can rev up to 2...
1997 chevrolet c 1500 | P03002000 Lincoln Town Car 4.6L: P1131/P1151 O2 Sensor & PO303-PO308 Misfire Codes - Diagnosis Tips
I own a 2000 Lincoln Town Car with 140,000 miles and a 4.6L coil-on-plug ignition system. Recently, the vehicle has started throwing two oxygen sensor codes—P1131 (Bank 1) and P...
2000 Lincoln Town Car | P03002005 Cadillac 发生 PO300 故障码的原因与解决方法
车主反映其2005年款Cadillac车辆出现PO300故障码，该代码表示‘发动机运行时检测到混合气过浓或过稀’。此问题通常由进气系统泄漏、氧传感器失准或燃油喷射器工作异常引起。建议检查进气歧管密封性、更换老化氧传感器，并确认燃油压力是否正常。由于PO300属于普遍性的发动机空燃比失调故障，建议在专业维修站进行诊断以排除潜在隐患。
2005 Cadillac | P0300P0300 Random Misfire Diagnosis and Fixes for 2003 Volkswagen Passat 1.8T
I own a 2003 Volkswagen Passat 1.8T with over 300,000 miles. The car has been running smoothly with only a slight misfire until recently. After the engine light came on, I reali...
Passat 1.8 | P0300