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.
Subaru OBD2 Code P1133 Explanation and Meaning
Does anyone know what Subaru OBD2 code P113-3 means? I've been searching through various diagnostic lists, but most skip over this specific code. Can someone clarify its exact c...
subaru | P1133Geo Prizm P0420 Fault: How to Diagnose O2 Sensors, Catalytic Converter or Coolant Temp Sensor
I own a 1996 Geo Prizm and recently the check engine light came on with fault code P0420. I'm looking for reliable testing methods to determine whether the issue is caused by fa...
Geo Prizm | P0420P0401 Honda Accord V6 2000 also question about transmission
Hello all! Glad I found this cool forum. I have a 2000 Accord and the check engine light came on. Honda told me it was error P0401 EGR Flow insufficient. Wish I had known abou...
Honda Accord V6 2000 | P040198 Chevrolet Tahoe P0404 Code: Exhaust Gas Recirculation Circuit Range/Performance Fix
Anyone know how to diagnose and fix P0404 - Exhaust Gas Recirculation (EGR) Circuit Range/Performance fault on a 1998 Chevrolet Tahoe? I've searched online but found limited inf...
98 Tahoe | P0404P0430 OBD2 Code on 2003 Chevrolet Z06: What Does It Mean and How to Fix It?
Hello everyone, I'm new to this forum and seeking help with a recurring issue on my 2003 Chevrolet Z06. The vehicle has recently started displaying the P0430 diagnostic trouble ...
LOST | P0430P1151 Fault Code on 2001 Ford Explorer Sport Trac: Loss of Power and O2 Sensor Diagnosis
Last night while driving home, I experienced a sudden and severe loss of engine power. When I pressed the accelerator, there was no response at all, and the engine produced a no...
Ford Explorer Sport Trac | P1151P0455 Diagnostic and Repair Guide for 2002 Ford Taurus EVAP System Leak
I recently received a P045-2 (EVAP Emission Control System Leak - Large) code on my 2002 Ford Taurus. I've already installed a locking gas cap, but the issue persists. According...
2002 Ford Taurus | P0455P1506 Fault on 1998 Ford Ranger: What Does It Mean and Should I Fix It?
I've recently started seeing a P1506 diagnostic code on my 1998 Ford Ranger. The check engine light comes on for approximately three days, then turns off for about a week before...
ford ranger | P1506P0401 Diagnostic and Fix for Ford Explorer Sport Trac - DPFE Sensor Solution
Hello everyone, My Check Engine light came on, and after scanning at AutoZone, they reported a P0401 code indicating EGR insufficient flow. I replaced both the EGR valve and EG...
FORD EXPLORER SPORT-TRAC | P0401P1443 OBD2 Fault Code on 1996 Ford Thunderbird: Causes, Diagnosis, and Repair Guide
I own a 1996 Ford Thunderbird that is displaying the P1443 diagnostic trouble code. I'd like to resolve this issue before it leads to more serious engine or emission problems. C...
1996 Ford Thunderbird | P14432000 Mazda Millenia S P1540 OBD II Code: Causes, Fixes, and DIY Solutions
I own a 2000 Mazda Millenia S with a 2.5L Miller cycle engine, approximately 41,000 miles, and an automatic transmission. Recently, the vehicle began experiencing difficulty acc...
Mazda Millenia S | P15401996 Ford Aerostar P0171 Code Repeated - Check Engine Light On After MAF and O2 Sensor Replacement
I own a 1996 Ford Aerostar with a 4.0L V6 engine. I've been experiencing recurring P0171 trouble code — 'System Too Lean Bank 1, Sensor 1' — even after replacing both O2 sensors...
1996 ford Areostar | P01712001 Toyota 4Runner B1300, B1575, C1446 Fault Codes - Door Locks Fail After Slamming Passside Door
I own a 2001 Toyota 4Runner and am experiencing a recurring issue: when I slam the passenger-side door, all door locks engage automatically but will not open using keyless entry...
2001 Excursion | B1300Practical 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.