Code result
P2609
Intake Air Heater System Performance
Moderate severity
What it means
The intake air heater system did not raise intake temperature by the expected amount during cold-start support. Suggests low current draw, poor connection to the grid, or a failed temperature feedback path.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
High-resistance battery feed to the heater
highOne of the most commonly reported causes for this code — check this first.
Intake air temperature sensor reads with offset
mediumA plausible cause — test and verify before replacing parts.
Related help
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