Some 2014-2018 Toyota Corolla vehicles equipped with a 2ZR-FE or 2ZR-FAE engine may exhibit a MIL on condition with DTC P2420 (evaporative emission pressure switching valve stuck off).
The fix requires replacing the charcoal canister and filter sub-assembly.
PART NO. ……………. PART
77740-02220................Canister assembly, charcoal
77706-12020................Filter sub-assembly
90463-13003................Clamp
Clear all DTCs using Techstream. Run the EVAP system check utility (Engine and ECT > Utility > EVAP System Check. Verify that no codes were set during the utility. Test drive to confirm.
