ECU information available
Actuator test: no OK
Measure parameters: yes
Oxygen sensor test: yes
Characterised by: oscillation ageing
Checks to be carried out if fault is present
Oscillation ageing
| conditions under which the fault appears | checks to be made conditions for checking |
|---|---|
| engine running, for 10 - 15 minute(s) vehicle driving at different engine speeds, steady speeds total time of at least 1 minute(s) in gear no. 4 at 50 km/h total time of at least 2 minute(s) in gear no. 5 at 70 km/h | verify: air leak on the exhaust verify (engine hot at idle): U = 0,6 - 0,7 V between terminals 71 and 70 on the control unit replace the upstream oxygen sensor road test the vehicle to try to reproduce the fault if incorrect: replace the downstream oxygen sensor |