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.

Forum post list 12644 total topics
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Hyundai Getz P0233 Diagnostic Code Meaning and Solution

Hi, I own a 2005 Hyundai Getz and recently received a diagnostic code P0233. Can anyone please explain what this error code means and how to resolve it? I'm looking for accurate...

Hyundai | P0233
2013-06-27
0 comments
2

2004 Toyota Highlander V6 - P0351 to P0356 Ignition Coil Faults Causing Engine Surging at Idle

I've been maintaining my in-laws' 2004 Toyota Highlander V6 3.0L 2WD, and recently noticed it began surging while driving. After towing it back to their home, I started investig...

2004 Toyota Highlander | P0351
2013-06-27
0 comments
9

1996 Silverado 5.7L Vortec P0300 Misfire: Shaking at 65+ MPH and Flashing Check Engine Light

I own a 1996 Chevrolet Silverado with a 5.7L Vortec engine. When I drive over 65 mph, the truck shakes noticeably—similar to having a tire out of balance—and the check engine li...

96 Silverado | P0300
2013-06-25
1 comments
2

P0134 Code on 2004 Acura RSX Type S: O2 Sensor Issue After Battery Disconnection

Hello, A few weeks ago I had to disconnect the battery to replace a headlight bulb. Shortly after, my Check Engine Light (CEL) came on and remained intermittently for about two...

2004 Acura RSX Type S | P0134
2013-06-22
3 comments
9

1998 BMW 528I Engine Light On with P1188, P1189, P0173, P00170 Codes - Vacuum Leak & Poor Running Symptoms

Hello, I'm looking for help with my 1998 BMW 528I. The engine light just came on, and before that, the car would run poorly at times—often making a noticeable air hissing sound,...

98 BMW528I | P0170
2013-06-19
2 comments
2

2000 Nissan Pathfinder 3.3L V6 - All Four O2 Sensor Heater Circuit Faults (Codes P0135, P0141, P0155, P0161)

I own a 2000 Nissan Pathfinder with a 3.3L V6 engine. About a month ago, I took it to a repair shop where they replaced the valve cover gaskets, front axle components, and Bank ...

2000 Pathfinder | P2177
2013-06-19
3 comments
2

2003 Impala 3.4L OHV Engine P0300 Code: Diagnosis and Repair Steps

With only a P0300 diagnostic code from the PCM, let's start with basic checks to identify the root cause. 1. Fuel Pressure Check: Measured at 58 psi — leak-down test shows no l...

2003 impala 3.4l ohv | P0300
2013-06-16
1 comments
2

P0341, P0442, P0404 Fault Diagnosis and DIY Fixes for 2000 Saturn SL2

My 2000 Saturn SL2 recently triggered three check engine light codes: P0341 (Camshaft Position Sensor Performance), P0442 (Evaporative Emission System Small Leak Detected), and ...

2000 Saturn SL2 | P0341
2013-06-14
5 comments
2

2004 BMW 330Ci Fault Code P2240: What Does It Mean and How to Fix?

This morning, the engine warning light activated on my 2004 BMW 330Ci. Later that evening, I used an Actron OBD2 scanner to retrieve the fault code, which displayed P2240. I suc...

2004 BMW 330Ci | P2240
2013-06-12
1 comments
2

2003 impala 3.4l ohv p0300 code

son was driving , stopped and put car in gear and engine started acting up. Have replaced pressure regulator and plugs with wiring.car has 120,000 miles with no major past probl...

2003 impala 3.4l ohv | P0300
2013-06-09
19 comments
0

P0300 Misfire Diagnosis for 2003 GMC Sierra 1500 5.3L with No Other Codes

I'm seeking help diagnosing a persistent P0300 misfire code on my 2003 GMC Sierra 1500 4x4 with a 5.3L V8 engine. The issue has been ongoing for several days, and despite replac...

03 GMC Sierra | P0300
2013-06-09
7 comments
1

1999 Toyota 4Runner V6 Engine P0171 Code: Diagnosis and Solutions

I'm experiencing a recurring P0171 code on my 1999 Toyota 4Runner with the V6 engine. I've already performed several troubleshooting steps including cleaning the MAF sensor, che...

1999 Toyota 4 Runner | P0171
2013-06-09
0 comments
2

2003 Chevrolet Express 3500 P045-than EVAP System Leak Diagnosis and Fix

2003 Chevrolet Express 3500 6.0L V8 - Sudden Low Idle Issue with P0455 EVAP Code I recently noticed a sudden onset of low idle when starting my 2003 Chevrolet Express 3500, esp...

2003 Chevrolet Express 3500 | P0455
2013-06-08
1 comments
M

P0301 Fault Diagnosis on 2004 Mitsubishi Lancer: Ignition, Fuel or Mechanical Issues?

Hi everyone, I'm looking for help with a P0301 diagnostic code on my 2004 Mitsubishi Lancer. I've already checked the coil packs and they appear to be in good condition. What sh...

Mitsubishi Lancer | P0301
2013-06-08
4 comments
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2003 Jeep Liberty P0042 Code: O2 Sensor Bank 1 Sensor 3 Heater Circuit Location and Fix Guide

Hi, I own a 2003 Jeep Liberty Sport with a 3.7L V6 engine. The check engine light has come back on and stayed illuminated. I used an Actron CP9125 portable scanner to retrieve t...

Jeep Liberty | P0042
2013-06-08
3 comments
2

2002 gmc sierra 1500 5.3 v8 p0507

Hey there. So my first post here's a little about the truck. It has 180000 miles. The service engine light has not been on until now. Just 2 thousands miles ago I hopped a curb ...

2002 gmc sierra 1500 | P0507
2013-06-07
10 comments
2

2004 Dodge Neon 2.0L - P0016 Fault After Crankshaft Position Sensor Replacement

My 2004 Dodge Neon 2.0L has recently developed a P0016 diagnostic trouble code. One month ago, I replaced the timing belt and tensioner as part of routine maintenance. The vehic...

2004 Dodge Neon 2.0 | P0016
2013-06-06
5 comments
Page 273 / 633 | 12644 topics

Practical 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.