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.
2003 Dodge Neon P0700 P0731 P0841 P1776 Transmission Error Codes - Solenoid Replacement Not Resolving Issue
I own a 2003 Dodge Neon that is displaying diagnostic trouble codes P0700, P0731, P0841, and P177
2003 dodge neon | P07001997 Toyota Camry 3.0 V6 P0401 Code: How to Diagnose and Fix EGR System Issues
I'm experiencing a persistent P0401 code on my 1997 Toyota Camry 3.0 V6, and I'm looking for guidance on how to properly diagnose the EGR system issue. So far, I've replaced all...
1997 Toyota Camry 3.0 V6 | P04012003 Dodge Neon P0456 Code: Causes, Fixes, and Aftermarket Gas Cap Issues
I recently encountered a P0456 diagnostic code on my 2003 Dodge Neon. I replaced the gas cap and disconnected the battery to reset the check engine light, but two days later the...
2003 Dodge Neon | P04562001 Ford Escort P1520 Error: Intake Manifold Runner Circuit Failure Diagnosis and Fixes
I recently encountered a P1520 error code on my 2001 Ford Escort. The diagnostic reading indicates 'Intake Manifold Runner Circuit Failure' — specifically, the Engine Control Mo...
2001 Ford Escort | P15202000 Grand Cherokee P1594 Fault Code: Brake Light, ABS Light On, Voltage Spikes and Radio Static
After driving my 2000 Grand Cherokee for just a few minutes, the brake light and ABS warning lights illuminate. My voltmeter jumps from 12V to 16V, the odometer begins to flicke...
2000 Grand Cherokee | P159497 Ford Expedition codes P0171 and P0174 not a PCV leak
I have 97 Expedition 5.4L 4x4 154k miles with 2 codes: P0171 and P0174. has new vacuum hose from intake to PCV, not leaking there. I don't hear any hissing fuel pressure is 30 l...
97 Ford Expedition | P0171OBD2 Codes P0300 and P0301 on 2004 Dodge Ram 1500 4.7L: Causes, Diagnosis, and Fixes
I'm experiencing OBD2 diagnostic codes P0300 (random/multiple cylinder misfire) and P0301 (cylinder 1 misfire) on my 2004 Dodge Ram 1500 with a 4.7L V8 engine. The truck has app...
2004 dodge ram 1500 4.7 | P0300Nissan Sentra GXE P0300 and P0430 Codes: Causes, Fixes, and What to Check
I own a 2002 Nissan Sentra GXE and have been experiencing persistent Check Engine Light issues. The light has remained on for an extended period due to financial constraints, bu...
Nissan Sentra GXE | P03001998 Toyota Camry P0303, P0325, P0420: Causes, Fixes & What Parts to Replace
My 1998 Toyota Camry (4-cylinder) has the Check Engine light on and displays OBD II diagnostic codes P0303, P0325, and P0420. The vehicle drives well otherwise. What should I do...
1998 Toyota Camry | P03032002 Pontiac GPX 3.8L Troubleshooting: P0172, P0101, and P0103 Fault Codes - Rough Idle, Stalling Issues
Hello, I'm experiencing persistent rough starting, rough idle, and stalling problems with my 2002 Pontiac GPX 3.8L. After reviewing the P0172 diagnostic information, I've been s...
2002 Pontiac GPX | P01012001 Dodge Ram 5.2L Oxygen Sensor Fault Codes P0132, P0135, P0138, P0141 - No Heating Voltage After Replacement
I'm seeking help with persistent oxygen sensor fault codes on my 2001 Dodge Ram 5.2L engine: P0132, P0135, P0138, and P0141. I've already replaced both oxygen sensors and reset ...
2001 Dodge Ram | P01321998 Grand Am P0452 Code: Evaporative Emission System Pressure Sensor/Switch Low Input Explanation
Hi everyone, I'm new to this forum and recently picked up a P0452 diagnostic code on my 1998 Grand Am. The code indicates 'Evaporative Emission System Pressure Sensor/Switch Low...
1998 Grand Am | P04522000 Jeep Grand Cherokee P0300-P0306 Misfire Causes: Worn Plugs, Injectors, or Cam Sensor?
2000 Jeep Grand Cherokee 4.0L engine, 139,000 miles. Recently purchased pre-owned; test drive was flawless. After driving approximately 20 miles off the lot, the check engine li...
2000 Jeep Grand Cherokee | P030002 pontiac grand am with p0305 code
Im having trouble with my 02 pontiac grand am 3.4 engine. It started idling rough and then the the rpms would go down and then level out every couple of minutes and it is hard t...
Pontiac Grand Am | P03051997 Toyota Camry 4-cylinder sudden MPG drop with P0300 code: valve wear or head gasket failure?
I own a 1997 Toyota Camry with 194,000 miles. Since reaching 150,000 miles, the car has experienced an oil leak and burning, but previously delivered strong fuel efficiency of a...
1997 Toyota Camry | P03002000 Ford Focus O2 Sensor Faults: P0136, P0141, P0171 - Diagnosis and Solutions
Initially, my 2000 Ford Focus displayed only P0141 and P0171 fault codes. I replaced the spark plugs, spark plug wires, and one of the oxygen (O2) sensors. After retesting, the ...
2000 Ford Focus | P0136Practical 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.