Code result
P2608
Intake Air Heater B Circuit High
Moderate severity
What it means
Voltage on the secondary intake air heater control line is above the expected window. Typical causes are a short to battery or an open relay coil.
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
Control wire shorted to a B+ supply
highOne of the most commonly reported causes for this code — check this first.
Open relay coil
mediumA plausible cause — test and verify before replacing parts.
Connector pins corroded - high contact resistance
lowLess common, but worth ruling out after the more likely causes.
Related help
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