LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Suzuki >> 2010 >> SX4 LE, Automatic CVT >> Repair and Diagnosis >> Engine Performance >> System >> Engine General Information And Diagnosis >> Diagnostic Information and Procedures >> DTC P0420: Catalyst System Efficiency Below Threshold >> DTC Confirmation Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC Confirmation Procedure

WARNING:
  • When performing a road test, select a place where there is no traffic or possibility of a traffic accident and be very careful during testing to avoid occurrence of an accident.
  • Road test should be carried out with 2 persons, a driver and a tester, on a level road.
NOTE:
  • If DTC other than aimed DTC are previously detected in DTC confirmation procedure, be sure to troubleshoot DTC previously detected.
  • Check that the following condition is satisfied when using this procedure.
    • ECT > 70°C (158°F)
  1. Warm up engine to normal operating temperature.
  2. Drive vehicle at 80 - 100 km/h (50 - 62 mile/h) for 10 min. (Keep throttle valve opening constantly and engine speed at 2,500 - 3,000 rpm in this step.)