Code No. P1902: Malfunction of Engine System


DIAGNOSTIC FUNCTION



  • When the engine-ECU detects the malfunction of the ETV system, the engine-ECU enters the limp-home control mode (throttle valve angle: approx. 20 %).
  • CVT-ECU begins controlling the following items: lockup inhibition, increase of secondary pressure, fixing of gear ratio line.

JUDGEMENT CRITERIA



PROBABLE CAUSES



  • Malfunction of the engine system (ETV)

DIAGNOSIS PROCEDURE

STEP 1. Check the engine-related diagnosis code.

Q. Is the engine-related diagnosis code set?
Carry out the appropriate troubleshooting.
Go to Step 2.

STEP 2. Symptom recheck after erasing diagnosis code

Q. Is the check result normal?
Intermittent malfunction
Replace the CVT-ECU.