Code 25: Revision history

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6 July 2026

  • curprev 18:5918:59, 6 July 2026 Cliff talk contribs 2,576 bytes +2,576 Created page with "'''Code 25''' is a diagnostic trouble code related to the Manifold air temperature sensor circuit on the Pontiac Fiero. Code 25 indicates that the ECM is seeing a manifold air temperature sensor signal that represents an unusually high air temperature reading. == Overview == The manifold air temperature sensor, often abbreviated as MAT sensor, tells the ECM the temperature of the incoming air. The ECM uses this information for..."
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