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.
P0640 Diagnostic Issue on 1995 Buick Riviera with Supercharged Engine
I own a 1995 Buick Riviera equipped with a supercharged engine and am currently encountering a P0649 diagnostic trouble code. The scanner indicates the issue is related to the Q...
1995 Buick Riviera | P06402000 Chevrolet Astro 4.3L Engine PO420 Code: Diagnosis and O2 Sensor Testing Guide
My 2000 Chevrolet Astro has 92,500 miles on the odometer. The 'Service Engine Soon' light started coming on around 90,000 miles. Using an Actron scanner, I detected a PO420 code...
2000 CHEVY ASTRO | P04201999 Ford F-150 5.4L Engine Light On with P0171 and P0174 Codes After MAF Sensor Replacement
The service engine light has come on, displaying trouble codes P0171 and P0174 on my 1999 Ford F-150 with a 5.4L V8 engine. I recently replaced the Mass Airflow (MAF) sensor two...
99 F-150 | P0171Nissan Sentra GXE P1444 Fault Code: What Does 'Manufacturer Control Auxiliary Emission Controls' Mean?
I recently received a diagnostic code P1444 from my Nissan Sentra GXE, which displays the message 'Manufacturer Controlled Auxiliary Emission Controls' as reported by Advanced A...
Nissan Sentra GXE | P14441998 Mazda B4000 DTC P0133: O2 Sensor Bank 1 Sensor 1 Location & Fix Guide
Hi everyone, I've been experiencing recurring check engine light issues on my 1998 Mazda B4000, with the fault code consistently showing as P0133 — Oxygen Sensor Bank 1, Sensor...
1998 Mazda B4000 | P0133Honda Odyssey P1728 Error Code: What It Means and How to Fix It
Hello, My Honda Odyssey is displaying two diagnostic trouble codes: P0420 and P1728. I understand what P0420 indicates, but I'm unsure about the meaning of P1728. According to ...
Honda | P17281996 Chevrolet Tahoe O2 Sensor Codes P0153, P0154, P0155, P0307 and P0115 - How to Reset and Diagnose
Just returned from Iraq. Before departure, I replaced both front oxygen (O2) sensors on my 1996 Chevrolet Tahoe. Despite the replacement, I'm still receiving these diagnostic tr...
96 Tahoe | P0200P0303 Fault on 1998 Chevrolet Malibu 2.4L: Diagnosis and Repair Guide
I'm experiencing a persistent misfire on cylinder #3 in my 1998 Chevrolet Malibu 2.4L engine. I've already replaced the spark plugs, but the issue persists. During troubleshooti...
98 Malibu 2.4L | P03031996 Ford Explorer V8 5.0 AWD P0402 EGR Flow Excessive - Check Engine Light Won't Clear
I own a 1996 Ford Explorer with a 5.0L V8 engine and all-wheel drive. The check engine light is on, and the diagnostic trouble codes show: - P0401: EGR Flow Insufficient Detect...
EGR | P0402Mercedes W210 Knock Sensor Open Circuit Fault Code: Diagnosis and Solutions
I took my Mercedes W210 to a mechanic, who used an Autoland Scientech D91 scanner and detected a knock sensor open circuit fault code. The issue is intermittent — after clearing...
mercedes w210 | P05652004 Toyota Corolla P0133 Fix: Is O2 Sensor Replacement Necessary or Just a Dirty Sensor?
Hello, I recently had my Check Engine light come on in my 2004 Toyota Corolla. It remained on for about two days with no noticeable driving issues. A friend suggested checking t...
2004 TOYOTA COROLLA | P01332001 Dodge Stratus P1494 Code: Fuel Leak Detection Pump Issue and Fuel Gauge Inaccuracy
My 2001 Dodge Stratus is exhibiting two concerning issues when refueling: the fuel nozzle continuously clicks off, as if the tank is full, even when I refill slowly. Additionall...
2001 Dodge Stratus | P1494Practical 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.