Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Diagnostic Method 2
Detect the malfunction by the cumulative value obtained from the amount of variation in λ change.
- Abnormality Judgment
Judge as NG when the following conditions are established.
| Malfunction Criteria | Threshold Value | DTC |
|---|---|---|
| Cumulative value obtained from the amount of variation in λ change Σ |(lambda(n) - lambda(n-1)) - (lambda(n-1) - lambda(n-2))| |
< Value from Map | P014C and P014D |
| Cumulative value obtained from the amount of variation in λ Σ |lambda(n) - lambda(n-1)| |
0.00 | 5.00 |
| Cumulative value obtained from the amount of variation in λ change | 0.00 | 3.00 |
| Cumulative value obtained from the amount of variation in λ Σ |lambda(n) - lambda(n-1)| |
0.00 | 3.00 |
| Cumulative value obtained from the amount of variation in λ change | 0.00 | 9.00 |
| Cumulative value obtained from the amount of variation in λ Σ |lambda(n) - lambda(n-1)| |
0.00 | 3.50 |
| Cumulative value obtained from the amount of variation in λ change | 0.00 | 3.50 |
| Cumulative value obtained from the amount of variation in λ Σ |lambda(n) - lambda(n-1)| |
0.00 | 2.00 | 4.00 |
| Cumulative value obtained from the amount of variation in λ change | 0.00 | 7.00 | 9.00 |
Time Needed for Diagnosis: 90 seconds
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
- Normality Judgment
Judge as OK and clear the NG if the following conditions are established.
| Malfunction Criteria | Threshold Value | DTC |
|---|---|---|
| Cumulative value obtained from the amount of variation in λ change Σ |(lambda(n) - lambda(n-1)) - (lambda(n-1) - lambda(n-2))| |
≥ Value from Map | P014C and P014D |
Time Needed for Diagnosis: 90 seconds
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.