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Engine Control / Engine Mechanical - Testing & Troubleshooting Expand All (for easy ctrl-f) Collapse All Removal, Installation And Inspection Camshaft and VTC Actuator Removal, Installation, and Inspection (K20C1) (2017 2018 2019 2020 2021) Camshaft and VTC Actuator Removal, Installation, and Inspection (K20C2) Crankshaft and CKP Pulse Plate Removal, Installation, and Inspection (1.5L Engine) Crankshaft and CKP Pulse Plate Removal, Installation, and Inspection (K20C1) (2017 2018 2019 2020 2021) Crankshaft and CKP Pulse Plate Removal, Installation, and Inspection (K20C2) EVAP Canister Purge Valve Removal, Installation, and Inspection (L15B7/L15BA/L15BY) Description & Operation Symptom Troubleshooting Index for Viewer After warming up, idle speed is above specifications without load (MIL works OK, no DTCs set) (K20C2: USA/Canada models) After warming up, idle speed is above specifications without load (MIL works OK, no DTCs set) (L15B7/L15BA: USA/Canada models) After warming up, idle speed is below specifications without load (MIL works OK, no DTCs set) (K20C2: USA/Canada models) After warming up, idle speed is below specifications without load (MIL works OK, no DTCs set) (L15B7/L15BA: USA/Canada models) Cold fast idle too high (MIL works OK, no DTCs set) (K20C2: USA/Canada models) Cold fast idle too high (MIL works OK, no DTCs set) (With XM) Cold fast idle too low (MIL works OK, no DTCs set) (K20C2: USA/Canada models) Cold fast idle too low (MIL works OK, no DTCs set) (L15B7/L15BA: USA/Canada models) Difficult to refuel (MIL works OK, NO DTCs set) (With XM) Difficult to refuel (MIL works OK, no DTCs set) (K20C2: USA/Canada models) Engine abnormal noise while fuel cut-off control (With Turbocharger) Engine is hard to start (MIL works OK, no DTCs set) (K20C2: USA/Canada models) Engine is hard to start (MIL works OK, no DTCs set) (L15B7/L15BA: USA/Canada models) Engine low power (With Turbocharger) Engine stalls (MIL works OK, no DTCs set) (K20C2: USA/Canada models) Engine stalls (MIL works OK, no DTCs set) (With XM) Engine starts but stalls immediately (MIL works OK, no DTCs set, security indicator stays on or flashes) (K20C2: USA/Canada models) Engine starts but stalls immediately (MIL works OK, no DTCs set, security indicator stays on or flashes) (L15B7/L15BA: USA/Canada models) Engine will not start (MIL works OK, no DTCs set) (K20C2: USA/Canada models) Engine will not start (MIL works OK, no DTCs set) (With XM) Engine will not start (MIL works OK, no DTCs set, security indicator stays on or flashes) (K20C2: USA/Canada models) Engine will not start (MIL works OK, no DTCs set, security indicator stays on or flashes) (L15B7/L15BA: USA/Canada models) Engine will not start and HDS does not communicate with the PCM (MIL comes on and stays on, no DTCs set) (K20C2: USA/Canada models) Engine will not start and HDS does not communicate with the PCM (MIL comes on and stays on, no DTCs set) (L15B7/L15BA: USA/Canada models) HDS does not communicate with the PCM or the vehicle (K20C2: USA/Canada models) HDS does not communicate with the PCM or the vehicle (L15B7/L15BA: USA/Canada models) Idle speed fluctuates (MIL works OK, no DTCs set) (K20C2: USA/Canada models) Idle speed fluctuates (MIL works OK, no DTCs set) (L15B7/L15BA: USA/Canada models) Low power (MIL works OK, no DTCs set) (K20C2: USA/Canada models) Low power (MIL works OK, no DTCs set) (L15B7/L15BA: USA/Canada models) MIL comes on and stays on, or never comes on at all, no DTCs set (K20C2, USA/Canada models) MIL comes on and stays on, or never comes on at all, no DTCs set (L15B7/L15BA: USA/Canada models) Troubleshooting Service Procedure Repair Regeneration Rewrite