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.
P0171 Fault Diagnosis and Repair Guide for 2000 Ford Escort ZX-2
I recently received a P0171 diagnostic code on my wife's 2000 Ford Escort ZX-2. The vehicle has been running smoothly until now, but yesterday it began stalling three separate t...
2000 Ford Escort ZX-2 | P017103 dodge has 5.7 hemi running rough code P0300 please help
please help i am having trouble fixing my truck. it runs rough at iddle but if i get on the throtle is seems to run good. i dont understand. someone please help
03 Dodge | P03002003 Dodge 1500 5.7 Hemi P0300 Code: Causes and Fixes for Rough Idle
I have a 2003 Dodge 1500 with a 5.7L Hemi engine. The vehicle is showing a P0300 diagnostic trouble code, indicating random misfires. I've confirmed good spark and recently repl...
03 dodge 1500 5.7 hemi | P030001 F150 P0304 and p0307 codes Did the typical stuff already
Ok, 01 F150 5.4, 66,000 miles Truck is running like absolute garbage.. It started running bad this pass weekend on a 5 1/2 hour trip. Burned a ton more fuel, only got like 6 mil...
F150 | P03041999 Toyota Camry 3.0L V6 Misfiring on Cylinders 1, 3, and 5 with P0300, P0301, P0303, P0305 Codes
My 1999 Toyota Camry 3.0L V6 is running sluggishly, with a smooth idle but poor performance under load. The vehicle is showing misfire diagnostic codes: P0300 (random misfires),...
1999 Camry 3.0 | P0301P0303 on Jeep Liberty
I have a 2005 Jeep Liberty with the 3.7L and 40,000mi. We have owned it for 4 months now and will on occassion give me a cylinder #3 misfire. Just the other day though it gave m...
Jeep Liberty | P03032005 Chevrolet Colorado P0300 Random Misfire: Causes, Fixes & Warranty Coverage
Two months ago I purchased a 2005 Chevrolet Colorado 2WD with a 2.8L engine and 5-speed transmission. When inspecting it on the lot, the MIL (Check Engine) light was already on....
Chevy Colorado | P0300P0102 Diagnostic and Fix for 1998 Chevrolet K1500 350 Engine
I own a 1998 Chevrolet K15
98 chevrolet k1500 | P0102Olds Alero P0141 Bank 1 Sensor 2: Upstream or Downstream O2 Sensor Diagnosis?
I'm experiencing a P0141 fault code on my Olds Alero, specifically for Bank 1, Sensor 2. I understand this relates to the oxygen sensor, but I need clarification: is this referr...
Olds Alero | P01411999 Plymouth Neon P1492 Fault: Battery Temperature Sensor Voltage Too High - Fix & OBD-II Readiness Issues
My 1999 Plymouth Neon (115,904 miles) has been well maintained with a new battery and fresh belts. However, the recent inspection failed due to Diagnostic Trouble Code P1492 — i...
1999 Plymouth Dodge Neon | P14922002 Ford Venture P1374 Code: Causes, Diagnosis, and Fix for Intermittent Starting Issues
Hi everyone, I'm looking for help diagnosing a P1374 code on my 2002 Ford Venture. The check engine light came on last week, but I didn't scan it until now. I've already replace...
2002 venture | P13742005 Dodge Neon P0304 Code: Engine Stalls at 2000 RPM, Resolves After Multiple Starts
My 2005 Dodge Neon is throwing a P0304 diagnostic trouble code. The issue occurs when I start the car — the check engine light comes on immediately and the vehicle will not exce...
2005 dodge neon | P03042000 Dodge Durango P0171 P0551 P0455 P1195 Fault: Poor Fuel Economy, Black Smoke, Exhaust Soot - How to Fix?
I own a 2000 Dodge Durango with a 4.7L V8 engine. The vehicle runs smoothly under normal conditions, but it consumes fuel rapidly—averaging only 7 to 8 miles per gallon. When th...
2000 Durango | P01711997 Chevrolet Cavalier OBD2 Fault Codes: P0200 & P0304 - Cylinder 4 Misfire and Fuel Leak Symptoms
My 1997 Chevrolet Cavalier with 130,000 miles has two OBD2 fault codes: P0200 (Injector Circuit Fault) and P0304 (Cylinder 4 Misfire). The vehicle runs very roughly due to the m...
97 chevrolet cavalier | P21772001 Dodge Grand Caravan P0601 Code: Causes, Fixes, and PCM Rebuilder Advice
The check engine light has activated on my 2001 Dodge Grand Caravan, and diagnostic testing reveals a persistent P0601 code. I recently replaced the Powertrain Control Module (P...
2001 Dodge Grand Caravan | P0601Practical 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.