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Typical Malfunction Thresholds

WARNING: This page is about a different car, the 2006 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
TYPICAL MALFUNCTION THRESHOLDS TABLE

Duration that all of following conditions are met 5 seconds or more
(a) Estimated ECT 75°C (167°F) or higher
(b) ECT sensor voltage Lower than 75°C (167°F)