Powertrain
generic / SAE
P2609
Intake Air Heater System Performance
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.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number6 / 09
Possible causes
- High-resistance battery feed to the heater high
- Intake air temperature sensor reads with offset medium
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 100–800 €
- Estimated time: 0.8–3 h
- Component: intake air heater
- Component: intake air temperature sensor
- Component: heater relay
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012