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.
2007 Mazda3 P0128 Code Returns After Thermostat and ECTS Replacement - Fix & Drive Cycle Solution
Hi everyone, I'm a 2007 Mazda3 Hatchback owner experiencing recurring trouble code P0128 despite completing repairs. I've done my own diagnostics and replaced both the thermosta...
2007 Mazda3 | P01282014 Chevrolet Trailblazer 2.8L Diesel Turbo P0401 EGR Fault - How to Fix Engine Light and Reduce Black Smoke?
I own a 2014 Chevrolet Trailblazer with a 2.8L diesel turbo engine. I've attempted to block the EGR system to improve engine response and reduce black smoke. However, after doin...
Chevrolet Trailblazer | P04012004 Ford F150 5.4L Engine P0430 Code After Timing Chain Replacement
My 2004 Ford F15-0 with a 5.4L V8 engine is displaying OBD-II diagnostic code P0430, indicating 'Catalytic Converter System Below Threshold - Bank 2'. I recently replaced the ti...
2004 F150 5.4L | P0430VW Golf 2.0 GT TDI 2009 Fault Codes P261A and C0700 - Diagnosis and Solutions
I own a 2009 VW Golf 2.0 GT TDI and recently encountered diagnostic trouble codes P261A and C0700. These codes are triggering the check engine light, and I'm seeking advice on t...
VW Golf | C07002000 Jeep Grand Cherokee Laredo 4.0L Fault Codes P0302, P1391, P0351, P0352, P0353 - Diagnosis and Repair Guidance
My 2000 Jeep Grand Cherokee Laredo with a 4.0L engine is displaying multiple OBD-II fault codes: P0302, P1391, P0351, P0352, and P0353. Initially, the vehicle only showed P0302 ...
200 jeep | P03022010 Chevrolet Captiva LTZ P0234 and P0299: Turbo Boost Pressure Issues and MAP Sensor Failure
Hi everyone, I own a 2010 Chevrolet Captiva LTZ (turbo diesel) and am experiencing a recurring issue when driving at high speeds. The 'Service Car Soon' warning light activates...
Chevrolet Captiva | P02342002 Dodge Grand Caravan 3.3L P0720 P0700 P1790 Check Engine Light and Speedometer Malfunction
My 2002 Dodge Grand Caravan with a 3.3L engine has recently started displaying multiple diagnostic trouble codes: P0720, P0700, and P1790. The Check Engine light is on, and when...
2002 dodge grand caravan | P0700F250 P0353 Coil 3 Location and Diagnosis Guide
Where is the #3 coil located on an F250? Specifically, which side of the engine does it sit on, and what should I check for a P0353 fault? The P0353 code indicates a problem wit...
f250 | P03532002 Pontiac Grand Am 3.4L - P0336 Code: No Start When Warm, After Replacing Crankshaft Position Sensor and EGR Valve
I've replaced both crankshaft position (CKP) sensors, the EGR valve, and the fuel pump on my 2002 Pontiac Grand Am 3.4L, but I'm still receiving a P0336 code. The vehicle won't ...
02 pontiac grand am 3.4 | P03362003 GMC Sierra 4WD DTC P0466: Can I Drive It on an 8,000-Mile Road Trip?
I'm planning a 8,000-mile road trip with a travel trailer and currently have a 2003 GMC Sierra 1500 4WD that has triggered DTC P0466. I don't have time to visit the shop before ...
2003 GMC Sierra | P0466dodge ram 1500 2003. p0172
I'm having trouble with my truck scanner says po172 bank 1 the truck won't start unless I start pressing on the gas but while it's on it shakes and when I finally let gas go,it ...
dodge ram 1500 | P01722012 Honda CR-V P2467 Diagnostic Code: Causes and Fixes
I recently encountered a P2467 diagnostic code on my 2012 Honda CR-V. This code indicates an issue with the exhaust gas recirculation (EGR) system, specifically related to exces...
Honda CR-V | P24671999 Mercury Villager Over-Revving at 1800 RPM with P0120 DTC Code
I own a 1999 Mercury Villager that is experiencing over-revving at approximately 1800 RPM. I've already replaced the spark plugs, plug wires, fuel filter, and the throttle posit...
1999 Villager | P01202011 GMC Acadia ABS and Traction Control Fault: Stored in NVM or Requires Active Trigger?
Hello, I'm troubleshooting a recent issue on my 2011 GMC Acadia (approximately 27,000 miles) and would like to understand how the ABS/Traction Control fault is stored. Specific...
2011 GMC Acadia | P0500P0411 Diagnostic and Fix for 2006 Pontiac Grand Prix - Air Injection System Issue
Hello. I have a 2006 Pontiac Grand Prix and am experiencing recurring P0411 diagnostic trouble code. I recently replaced the vacuum pump relay, but the code has returned. After ...
Pontiac Grand Prix | P04112007 Jeep Commander P0507 Emission Code: Does Changing Throttle Body Fix It?
I own a 2007 Jeep Commander with a 3.7L engine and am currently failing emissions due to trouble code P0507. I'm wondering if simply replacing the throttle body will resolve the...
2007 Jeep Commander | P05072004 Mazda 3 P0456 Fault Diagnosis: How to Identify and Fix EVAP System Leak
I'm not very knowledgeable about cars, but I don't want to spend hundreds at a mechanic when I might be able to fix it myself. I've read that OBD2 code P0456 on a 2004 Mazda 3 c...
2004 Mazda 3 | P04562014 Dodge 3500 6.7L 4x4 P0087 Low Fuel Rail Pressure - Dealer Repairs Failed, Power Loss & Poor Mileage
I own a 2014 Dodge 3500 6.7L 4x4 diesel truck and am currently experiencing a persistent P0087 fault code indicating low fuel rail pressure. The issue has been taken to the deal...
2014 Dodge 3500 6.7 4x4 | P0087Practical 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.