DTC Information And Inspection: DTC Detecting Condition
WARNING: This page is about a different car, the 2021 Hyundai Kona. However, it is still accessible from the selected car via links, so may be relevant.
| Item |
Detecting Condition |
Possible Cause |
| Case 1 |
Main Action |
- Response rate check at entry in fuel cut-off (Rich-to-Lean)
|
- Leakage in intake or exhaust system
- Faulty fuel system.
- Front and rear HO2S connections reversed.
- Poor connection or harness damage
- HO2S contamination
|
| Prerequisite Condition |
- Downstream O2 sensor operative readiness is detected.
- O2 sensor internal resistance is lower than 3000Ω.
- Catalyst temperature (model) is greater than 400° (752°F).
- Downstream O2 sensor signal at entry into fuel cut-off is higher than 0.6V.
- Battery voltage is between 11V and 16V.
|
| Threshold Value |
- Average signal gradient during 3 valid fuel cut-off is under 1000mV per second.
|
| Diagnosis Time |
- 3 valid fuel cut-off phases
|
| Case 2 |
Main Action |
- Response rate check after leaving fuel cut-off (Lean-to-Rich)
|
| Prerequisite Condition |
- Downstream O2 sensor operative readiness is detected.
- Mass air flow integral after leaving fuel cut-off is larger than 100g.
- Catalyst temperature (model) is higher than 400° (752°F).
- Exhaust gas temperature (model) at sensor location is higher than 400° (752°F).
- O2 sensor internal resistance is smaller than or equal to 3000Ω.
- Battery voltage is between 11V and 16V.
|
| Threshold Value |
- Average signal gradient during 3 valid diagnosis phases is under 1500mV per second.
|
| Diagnostic Time |
- 3 valid diagnostic cycles
|
| MIL-On Condition |
|