Car Fix DIY Videos

In this video, I have a look at a customer’s 2011 Toyota Corolla that came in with what looked like a never-ending list of problems. The check engine light was on with multiple EVAP system codes, the ABS light was illuminated, the horn didn’t work, and the vehicle was overdue for New York State Inspection.

The stored trouble codes included:

P043E – EVAP System Leak Detection Reference Orifice High Flow
P043F – EVAP System Leak Detection Reference Orifice Low Flow
P2401 – EVAP Leak Detection Pump Control Circuit Low
P2402 – EVAP Leak Detection Pump Control Circuit High
P2419 – EVAP System Switching Valve Control Circuit Low
C1201 – Engine Control System Malfunction
C1422 – Master Cylinder Pressure Sensor Circuit

The horn concern was diagnosed and traced to a failed spiral cable (clock spring), restoring proper horn operation after replacement.

As for the EVAP system… I made a judgment call. After seeing enough of these Corollas with the exact same group of codes, I chose to replace the EVAP canister assembly based on experience rather than spending additional time proving what history strongly suggested. If I’d been wrong, that risk was mine, not the customer’s.

Fortunately, experience paid off. The EVAP repair corrected the fault, all of the codes stayed gone, the emissions drive cycle completed successfully, and the Corolla was ready to pass New York State Inspection.

Sometimes the service manual tells you how to prove a failure. Experience tells you when proving it isn’t worth the customer’s money.

Thanks for watching!

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Disclaimer:
Due to factors beyond the control of South Main Auto Repair, we cannot guarantee against unauthorized modifications or improper use of the information provided in this video. South Main Auto Repair assumes no liability for property damage or personal injury resulting from the use of any tools, equipment, chemicals, lubricants, or information presented. We strongly recommend following safe practices when working with power tools, automotive lifts, jack stands, electrical equipment, blunt instruments, or any other tools and equipment shown or implied in this video. No information in this video creates any express or implied warranty or guarantees any particular result. Use this information responsibly and at your own risk.

#ToyotaCorolla #Toyota #CheckEngineLight #EVAP #HornRepair #ClockSpring #ABSLight #Diagnostics #AutoRepair #SouthMainAuto