Current diagnostic rules

Actual boost stays more than 0.3 below target with throttle above 80% and RPM above 2500 for at least 250 ms. An error above 0.55 is critical.

Actual boost stays more than 0.25 above target with throttle above 80% and RPM above 2500 for at least 120 ms. An overshoot above 0.5 is critical.

Boost falls by more than 0.45 within 250 ms with throttle above 85% and RPM above 2500. Minimum duration is 40 ms.

Pedal demand is above 90% while throttle is below 70% for longer than 50 ms. Throttle below 40% is critical.

Actual torque stays more than 120 Nm below requested torque with throttle above 70% for at least 100 ms.

A cylinder timing value, or total timing when cylinder channels are absent, stays below −3° for at least 50 ms. Below −6° is critical.

One cylinder differs from the middle of its peers by more than 5° for at least 50 ms. Above 8° is critical; at least three cylinder channels are required.

Knock correction on any cylinder stays below −3° for at least 40 ms. Below −6° is critical.

The same cylinder has at least three correction episodes below −2.5° within 5 seconds. A value below −6° makes the event critical.

Fuel pressure stays below 90% of target with throttle above 80% and RPM above 3000 for at least 200 ms. The rule immediately creates a critical event.

Fuel pressure falls faster than −500 units/s with throttle above 80% and RPM above 2500 for at least 30 ms.

Actual lambda stays more than 0.08 above target with throttle above 80% and RPM above 2500 for at least 120 ms.

Injector duty stays above 95% for at least 200 ms. A value above 99.5% is critical.

Short-term trim exceeds ±15% or long-term trim exceeds ±12% for at least 500 ms.

Intake air temperature stays above 60 °C for at least one second. Above 80 °C is critical.

Coolant temperature stays above 110 °C for at least 500 ms. Above 120 °C is critical.

The intake or exhaust cam differs from its target by more than 10° for at least 200 ms.

RPM is above 6800 with pedal demand above 80% for at least 50 ms. This may represent normal limiter operation.

Detects a full-throttle area: throttle at or above 90%, duration of at least one second, and an RPM increase of at least 500.

Absolute slip is above 250 rpm in third gear or higher with throttle above 30% for at least 300 ms.

Records a change in the reported gear number inside a WOT area.

Wheel-speed spread is above 8 km/h with vehicle speed at or above 20 km/h for at least 100 ms. Above 20 km/h is critical.

One wheel differs from the others by more than 15 km/h for at least 20 ms. Above 30 km/h is critical.

Finds a gap, invalid value, or zero reset lasting at least two samples between valid values.

Finds an implausibly fast change: wheel speed above 1800 units/s, boost above 15 units/s, or temperature above 80 units/s.

A signal barely changes for more than 2 seconds while RPM changes by at least 500 during that period.