Powertrain
Definition only
Lights the check engine lamp
P2606: Intake Air Heater B Circuit Range/Performance
Standardized SAE J2012 code · P26xx — Computer and output circuits
What does P2606 mean?
The secondary intake air heater current does not match expected resistance. Either the grid is partially open or the relay contacts have high resistance.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Common causes
- High Partial element failure raises grid resistance
- Medium Burned relay contacts
- Low Sensor element aged beyond calibration window
Likelihood is a general estimate across vehicles; your make and model may differ.
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P2606 in the community
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