OBD-II code · Powertrain (generic, extended)
P26C9 Chassis Control Module 2 Requested MIL Illumination
A second chassis control module has signalled an emissions-relevant fault and requested the engine controller to switch on the MIL.
Is it safe to drive with P26C9?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyActive DTC stored in the chassis module
- Less likelyCommunication loss interpreted as MIL request
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–2.5 h
- Emissions test
- Usually unaffected
- Parts involved
- Chassis Control Module 2, Communication Bus
Related codes
- P26C8Chassis Control Module 1 Requested MIL Illumination
- P26C6Exhaust Flow Control Valve A Control Circuit Low
- P26C7Exhaust Flow Control Valve A Control Circuit High
- P26CAEngine Coolant Pump Control Circuit / Open
- P26CBEngine Coolant Pump Performance/Stuck Off
- P26CCEngine Coolant Pump Control Circuit Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.