DTC P0505 Idle Air Control System: DTC Detecting Condition
DTC DETECTING CONDITION CHART
| ITEM |
DETECTING CONDITION |
POSSIBLE CAUSE |
| DTC Strategy |
- Plausibilty check (engine speed deviation monitor under cold start)
|
- Restriction in intake or exhaust system
- ISCA stained with carbon
- Bad fuel
- Contact resistance in connectors
- Faulty ISCA valve
|
| Enable Conditions |
- No relevant failure
- Catalyst heating active
- Ambient pressure > 800 hPa
- 11V < Battery voltage < 16V
- Under normal engine running conditions
|
| Threshold Value |
- Integral of deviation between setpoint RPM and actual speed RPM is out of the threshold value
|
| Diagnostic Time |
- For 20 seconds from engine start
|
| Fail Safe |
|