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.
Ford P1451 OBD2 Code: Evaporative Emission Control Vent Circuit Fault - 1997 Ford E150 Solution
I'm experiencing a persistent engine light issue on my 1997 Ford E150, and the diagnostic trouble code P1451 is indicating a problem with the evaporative emission control system...
Ford | P14512000 Mercury Mountaineer P1507 Fault: Idle Air Control Valve Issue at Low Speeds
My 2000 Mercury Mountaineer is showing fault code P1507 and the engine idles too low, causing it to stall intermittently. Does anyone know how to diagnose or fix this issue? Any...
2000 Merc Mountaineer | P15071996 Chevrolet Tahoe P1870 Transmission Code: Causes, Symptoms, and Solutions
I own a 1996 Chevrolet 4x4 Tahoe, and my SES (Service Engine Soon) light has been on for some time. After having the vehicle scanned, I received Diagnostic Trouble Code P1870. T...
96 TAHOE | P1870P0303 and P0113 on 97 Escort
When I took the car to Autozone, I got the codes P0303- Cylinder 3 Misfire and P0113- IAT Sensor 1 Circuit High Input. I ordered the new IAT sensor. What I am wondering is when ...
97 Escort | P0113P0420, P0430, p1351 on 97 Chevy Silverado 5.7L
I have read the article on this topic. I drive a 97 Chevy Silverado, 2WD 5.7L 205k miles. I replaced the coolant temp sensor, and checked O2 sensors. Bank 2(P0430) had a bad sen...
97 Chevy Silverado 5.7L | P0420Lexus RX300 OBD Code 9140: What Does It Mean? - Manufacturer-Specific Diagnostic Code
I recently had my Lexus RX300 checked at AutoZone, and they reported an OBD-II diagnostic code 9140. This appears to be a manufacturer-specific code rather than a standard OBD-I...
Lexus RX300 | P91402001 Ford Focus P0171 Code: Fuel Delivery Module Recall and Possible Causes
My 2001 Ford Focus has been displaying a P0171 diagnostic trouble code. After researching online, I found recall number 03V482000 related to contamination in the Fuel Delivery M...
2001 Ford Focus | P01711997 Chevrolet Blazer P0300 and P1441 Fault: Symptoms, Causes, and Solutions
I own a 1997 Chevrolet Blazer with a 4.3L engine and 165,000 miles. Approximately four months ago, the fuel pump failed, so I had it replaced at the dealer along with a full fue...
1997 Chevy Blazer | P0300Mazda Miata 1999 1.8L - P0300 Fault Code: Random Misfire Diagnosis and Solutions
Hello! I'm experiencing a P0300 random misfire code on my 1999 Mazda Miata 1.8L, which appears occasionally when starting the engine. The car runs roughly for about 30 seconds b...
Mazda Miata | P03001996 Ford Escort Fuel Economy Issues: P1443, P1130, P1131 & P0171 - EVAP, O2 Sensor, MAF Diagnosis
I own a 1996 Ford Escort with a 5-speed manual and 1.9L engine. Despite replacing the spark plugs, ignition wires, coil pack, fuel filter, and installing a new air filter, I'm s...
FORD ESCORT | P0000P0141 O2 Sensor Heater Circuit Malfunction - 2000 Dodge Durango V8 4.7L
Hi everyone, I own a 2000 Dodge Durango with a 4.7L V8 engine, currently at 86,000 miles. About four days ago, the Check Engine Light activated. Unfortunately, I was planning a...
2000 Dodge Durango | P0141Practical 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.