Uploaded October 2025 | Updated September 2026, 1 day ago
Is your Honda Accord 2.4L running rough, idling high, or smelling like raw gas? In this video, I walk through my real-world troubleshooting process on a 2011 Honda Accord Coupe with over 200,000 miles that came in with these codes:
⚠️ CEL / Pending Codes:
P0172 — System Too Rich
P2A00 — O2 Sensor Circuit Range/Performance (Bank 1 Sensor 1)
P1454 — EVAP System Leak Detected
The car had a rough idle, hard start, and smelled like unburned fuel.
After testing, I discovered multiple ripped vacuum hoses, a faulty purge valve, and a dirty throttle body and MAF sensor.
In this step-by-step breakdown, I explain how I:
✅ Diagnosed the cause of the rich mixture
✅ Tested and replaced the purge valve
✅ Found vacuum leaks
✅ Cleaned the throttle body and MAF
✅ Got the idle back down and restored smooth running
This video is for anyone chasing a rough idle, bad fuel smell, or EVAP leak on a Honda — whether you’re a DIY mechanic, tech in training, or just trying to save money.
🔧 WHAT YOU’LL LEARN
✅ How to diagnose a rich condition on a 4-cylinder Honda
✅ Common causes of P0172 / P1454 codes
✅ How to test purge valves & inspect hoses
✅ Simple fixes that can save hundreds in shop fees
If you found this video helpful, hit 👍, subscribe for more DIY repairs, diagnostics, and tool reviews, and drop your questions in the comments — I read them all!
#HondaAccord #CarTroubleshooting #DIYMechanic #HondaLife #CarRepair #AutoRepair #RoughIdleFix #P0172 #CheckEngineLight #CarSmellsLikeGas #MechanicTips #EngineDiagnostics #DrivewayMechanic #DIYCarRepair #HondaDIY #OBD2Codes #CarRepairTips #AutoTech #MechanicLife #ToolTime
Is your Honda Accord 2.4L running rough, idling high, or smelling like raw gas? In this video, I walk through my real-world troubleshooting process on a 2011 Honda Accord Coupe with over 200,000 miles that came in with these codes:
⚠️ CEL / Pending Codes:
P0172 — System Too Rich
P2A00 — O2 Sensor Circuit Range/Performance (Bank 1 Sensor 1)
P1454 — EVAP System Leak Detected
The car had a rough idle, hard start, and smelled like unburned fuel.
After testing, I discovered multiple ripped vacuum hoses, a faulty purge valve, and a dirty throttle body and MAF sensor.
In this step-by-step breakdown, I explain how I:
✅ Diagnosed the cause of the rich mixture
✅ Tested and replaced the purge valve
✅ Found vacuum leaks
✅ Cleaned the throttle body and MAF
✅ Got the idle back down and restored smooth running
This video is for anyone chasing a rough idle, bad fuel smell, or EVAP leak on a Honda — whether you’re a DIY mechanic, tech in training, or just trying to save money.
🔧 WHAT YOU’LL LEARN
✅ How to diagnose a rich condition on a 4-cylinder Honda
✅ Common causes of P0172 / P1454 codes
✅ How to test purge valves & inspect hoses
✅ Simple fixes that can save hundreds in shop fees
If you found this video helpful, hit 👍, subscribe for more DIY repairs, diagnostics, and tool reviews, and drop your questions in the comments — I read them all!
#HondaAccord #CarTroubleshooting #DIYMechanic #HondaLife #CarRepair #AutoRepair #RoughIdleFix #P0172 #CheckEngineLight #CarSmellsLikeGas #MechanicTips #EngineDiagnostics #DrivewayMechanic #DIYCarRepair #HondaDIY #OBD2Codes #CarRepairTips #AutoTech #MechanicLife #ToolTime
