Traditional gasoline car fault
Search fault code and browse forum case posts.
This page is designed for quick diagnosis on gasoline vehicles by combining code lookup with real discussion cases. Enter a fault code to filter related topics, then compare symptom context such as cold start behavior, acceleration load, fuel-trim deviation, ignition misfire pattern, and recent maintenance history. Many codes can be triggered by shared root causes, so use cross-checks from multiple posts before replacing sensors, coils, injectors, or catalytic components.
P0403 and P0408 Fault Code in 2001 Volkswagen Polo with 1.4L Engine After Engine Swap
Hi, I own a 2001 Volkswagen Polo equipped with a 1.4-liter engine. The original 1.0-liter engine had piston ring failure, so I replaced it with a 1.4-liter unit from a 2000 Polo...
2001 Polo | P04032002 Dodge Dakota 3.9L Engine P0601 Code: Internal Memory Checksum Malfunction Diagnosis and Fixes
I've been researching OBD2 code P0601 on my 2002 Dodge Dakota with a 3.9L engine, which indicates an internal memory checksum malfunction in the Powertrain Control Module (PCM)....
2002 dodge dakota 3.9 | P06012004 Jeep Liberty P0441 Error Code: Causes, Cost, and Safety Concerns
I own a 2004 Jeep Liberty that has been displaying error code P0441. The vehicle is now experiencing hesitation and seems like it might stall—this has occurred twice. I'm concer...
Jeep | P04412004 Mitsubishi Lancer OZ Rally P0421 Check Engine Light: Cat or Downstream O2 Sensor? How to Diagnose and Fix for Smog Compliance
My 2004 Mitsubishi Lancer OZ Rally passed smog inspection last year, but six months later the check engine light came on. Using an OBD-II scanner, I found fault code P0421 — ind...
2004 Mitsubishi Lancer OZ Rally | P04212006 Kia Sedona EX P2189 Code: Common Causes and Fixes for Lean Fuel Mixture at Idle
Has anyone experienced the P2189 diagnostic trouble code on their 2006 Kia Sedona EX, especially with only 31,000 miles? I'm trying to identify the most common fixes for this mo...
2006 Kia Sedona EX | P2189P0322 Fault in 2002 VW Passat V6 - No Signal from Distributor Engine Speed Input Circuit
I'm experiencing a P0322 diagnostic trouble code on my 2002 Volkswagen Passat V6. The code indicates a 'distributor engine speed input circuit no signal' issue. I've checked the...
VW 2002 Passat V6 | P0322P0507 High Idle Issue on 2001 Hyundai Santa Fe 2.7L V6: Diagnosis and EVAP System Fix
I'm experiencing a persistent P0507 (High RPM at idle) code on my 2001 Hyundai Santa Fe with the 2.7L V6 Delta engine. After replacing valve cover gaskets, PCV valve, and severa...
2001 Santa Fe | P05072003 Monte Carlo 3.4L V6 P0404 Code: Power Loss, EGR Issues & Hot-Weather Performance Fix
Hi everyone, I'm Adrian and new to the forum. I'm having an issue with my 2003 Monte Carlo 3.4L V6 engine — it's showing a P0404 diagnostic trouble code (DTC), which indicates a...
2003 Monte Carlo | P040499 Explorer w/ P0174, P0171, P1151, P1131 DTCs
I have a '99 explorer w/ 4.0 engine. It runs rough whenever the engine is under a load. It is showing the following codes: P0174, P0171, P1151, and P1131. It has had the intake ...
99 Explorer | P0171Nissan Sentra 2000 P0155 Fault: Oxygen Sensor Bank 2 Sensor 1 Location and Replacement Guide
Hello everyone, I'm currently dealing with a Nissan Sentra 2000 (1.8L engine) and have recently received the OBD2 diagnostic code P0155. After researching, I understand that thi...
Nissan Sentra 2000 | P01552002 Ford F150 5.4L Engine Misfire: Fault Codes B1676 and P0301 Explained
My 2002 Ford F150 King Ranch with a 5.4L V8 engine (50,000 miles) is showing two diagnostic trouble codes: B1676 and P0301. What do these codes mean, and what should I check to ...
2002 ford 150 | B16762001 Ford Ranger 3.0L P0320
Truck dies after 5 sec of running. Had no communication prior and no crank or start. Replaced the PCM and now the truck starts but dies and has this code. Any ideas?
2001 Ford Ranger | P032004 intrepid 2.7l no spark, code P0113, flashing cel
well the subject says it all really. 04 dodge intrepid se 2.7l engine, has no spark, and code P0113. (air intake voltage high). i have checked all 3 timing marks on the main tim...
04 Intrepid 2.7L | P01132010 Hyundai Tucson O2 Sensor Bank 4 Sensor 3 Fault Code Explanation and Repair Guide
Hello everyone, I recently purchased a Bluetooth Torque Android OBD-II device to diagnose my 2010 Hyundai Tucson, but it detected an issue with the Oxygen (O2) heated sensor in...
2010 Hyundai Tucson | P01711997 Mercedes E420 P0410 Code: How to Fix Secondary Air Injection System Fault
I own a 1997 Mercedes-Benz E420 and recently received a check engine light with fault code P0410, indicating an issue with the secondary air injection system. Can anyone provide...
1997 Mercedes E420 | P0410Practical workflow for fault-code troubleshooting
Start by confirming battery voltage and reading freeze-frame data, then inspect wiring and connectors before replacing parts. If the code returns after clearing, record the exact driving or idling condition when it reappears. Prefer case threads with complete repair feedback, because confirmed outcomes provide stronger guidance than one-time symptom descriptions. Following a step-by-step workflow reduces repeated repairs and lowers total diagnosis time.