OBD-II code · Powertrain (generic, extended)
P2606 Intake Air Heater B Circuit Range/Performance
The secondary intake air heater current does not match expected resistance. Either the grid is partially open or the relay contacts have high resistance.
Is it safe to drive with P2606?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyPartial element failure raises grid resistance
- PossibleBurned relay contacts
- Less likelySensor element aged beyond calibration window
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.8–2.5 h
- Emissions test
- Usually unaffected
- Parts involved
- Intake Air Heater B, Heater Relay
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.