Powertrain
generic / SAE
P2608
Intake Air Heater B Circuit High
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.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number6 / 08
Possible causes
- Control wire shorted to a B+ supply high
- Open relay coil medium
- Connector pins corroded - high contact resistance low
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 100–500 €
- Estimated time: 0.8–2 h
- Component: intake air heater b
- Component: heater relay
- Component: wiring harness
- MIL / check engine light
Sources
References
sae:J2012