P26C8
Chassis Control Module 1 Requested MIL Illumination
A chassis control module (typically active suspension, AWD coupling, or steering controller) has signalled an emissions-relevant fault and requested the engine controller to switch on the MIL.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Active DTC stored in the chassis moduleCommon
- Communication loss interpreted as MIL requestLess likely
Parts involved
- Chassis Control Module 1
- Communication Bus
P26C8 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.