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.
2000 Jeep Cherokee P0122 and P0123 After Water Ingestion - Diagnosis and Fixes
My 2000 Jeep Cherokee was submerged in deep water, causing water to enter the intake system and resulting in engine failure. I have already replaced the starter, coil pack, spar...
2000 Jeep Cherokee | P0122OBD2 Code 1195 and Code 96 on 1990-1997 Ford Probe 2.5L V6: Troubleshooting Idle Issues
We have replaced the Throttle Position Sensor (TPS) three times, inspected all vacuum hoses and sensors thoroughly. When manually adjusting the idle using the idle stop screw or...
Ford Probe | P11951998 Buick Lesabre P0203 and P0303 Codes: Injector Not Firing, Diagnosis Steps & PCM vs Wiring Troubleshooting
I recently purchased a 1998 Buick LeSabre Limited from the original owner, which had been driven over 124,000 miles with no prior issues and excellent engine performance. Sudden...
98 Buick Lesabre | P020399 GMC Suburban P0420 and P0430 Codes: Are Two Bad Catalytic Converters the Cause?
I recently received diagnostic codes P0420 and P0430 on my 1999 GMC Suburban. Does this mean I have two faulty catalytic converters, or could there be another underlying issue c...
99 gmc suburban | P04202002 Chevrolet Savanna 5.0L Engine P1345 Fault Code: Camshaft Position/Crankshaft Correlation Issue
I'm assisting my father with repairing his 2002 Chevrolet Savanna Van 2500 (5.0L V8 engine). After the check engine light (MIL) came on, we used an OBD-II scanner and retrieved ...
2002 Chevrolet Savanna | P13451999 Nissan Pathfinder with P0325, P1105, P1705 and P0731A: Causes and Fixes for Engine Shutdown and Acceleration Issues
My 1999 Nissan Pathfinder (129,000 miles) suddenly shut down while idling and began experiencing repeated stalling. After scanning the vehicle, fault codes were detected: P0325,...
Nissan Pathfinder 1999 | P2177P0101 OBD2 Diagnostic Code on 2004 Chevrolet Silverado 2500HD: Causes and Explanation
A 2004 Chevrolet Silverado 2500HD owner reports the appearance of OBD2 fault code P0101 during a highway trip at 60 mph while towing a fifth wheel. The Check Engine light activa...
2004 Chevy Silverado 2500HD | P01012002 Chrysler PT Cruiser in Limp Mode: P0605, P0551, P0700 Error Codes Explained
I own a 2002 Chrysler PT Cruiser with an automatic transmission, and it has recently entered limp mode. I took it to Advance Auto Parts for an OBD-II scan, but they couldn't ide...
2002 PT Cruiser | P05512002 Toyota Sienna P0420 Code: Do I Need to Replace Both Catalytic Converters at 150K Miles?
I've searched online but still have some confusion about this issue. My 2002 Toyota Sienna, with 150,000 miles, has been showing a P0420 diagnostic trouble code. The check engin...
02 Sienna | P04201997 Monte Carlo 3.1L V6 - Persistent P0341 and P0336 Error Codes After Sensor & Fuel Pump Replacements
I own a 1997 Monte Carlo with a 3.1L V6 engine. The car began exhibiting severe jerking while driving, then suddenly stalled and would not restart. My uncle diagnosed the issue ...
97 Monte Carlo | P03361997 Cadillac Catera P1701 Fault Code: Transmission MIL Request Circuit Diagnosis and Fix
I am experiencing a P1701 fault code on my 1997 Cadillac Catera, which indicates a 'Transmission MIL Request Circuit' issue. The check engine light is illuminated, and I'm looki...
97 cadillac catera | P17012001 Buick Century P0440 Code: Is the Intake 'T' Hose Vacuum Leak the Root Cause?
I own a 2001 Buick Century with a 3.1L engine that has been consistently throwing out the P0440 diagnostic trouble code for several months. I've already replaced the gas cap, bu...
2001 Buick Century | P04401998 E350 5.4L 4R100 Transmission Code P1754 - Rough Idle, Squeal from Bell Housing
I own a 1998 Ford E350 with a 5.4L V8 and 4R100 transmission, currently at approximately 276,000 miles. When I purchased the van, it was reported to have only a blown engine, bu...
98 E350 | P17541999 Chevy Venture P0717 Code: Transmission Speed Sensor Wiring Location and Diagnostics
I own a 1999 Chevrolet Venture with 207,000 miles. The transmission was rebuilt at 144,000 miles. I'm currently receiving OBD2 diagnostic code P0717, which indicates that the tr...
99 venture | P07172003 Dodge Neon P0700 Code: How to Fix Poor Shifting and Transmission Issues
My 2003 Dodge Neon is experiencing poor shifting, and the check engine light has come on with fault code P0700. This code indicates a transmission control system malfunction. I ...
2003 dodge neon | P07001999 Chevy Silverado Codes P0327, P0171, and P0174
most of the time yes!
1999 Chevy Silverado | P01711999 Dodge Durango P0202 and P0207 Codes: Troubleshooting Injector Circuit Faults
On Saturday, while driving my 1999 Dodge Durango on the interstate at approximately 65 MPH, I noticed the vehicle began surging significantly. The engine would suddenly surge by...
99 Dodge Durango | P0202P0303 Fault on 1996 Jeep Cherokee 4.0L with AW4 Transmission - No Start, No Injector Power
I own a 1996 Jeep Cherokee with a 4.0L engine and an AW4 transmission. Recently, the vehicle has been throwing a P0303 diagnostic code indicating an open circuit in injectors #1...
Jeep Cherokee | P0303P1443 OBD2 Fault in 1997 Ford Escort 2.0L 4-Cylinder: Causes, Fixes & Smog Test Implications
Hello, I recently received a P1443 Diagnostic Trouble Code from my 1997 Ford Escort 2.0L 4-cylinder vehicle, which triggered the check engine light. The warning light comes on ...
Ford Escort | P1443Practical 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.