Check engine light illuminated, or previously on One of the below Exhaust Flap fault codes stored in PTCU...

Bulletin number

LI49.10-P-080201

Component

Electrical system

Summary

Complaint Check engine light illuminated, or previously on One of the below Exhaust Flap fault codes stored in PTCU N127: P13C273 P13C278 P140473 Cause Various Remedy 1. Thaw exhaust system if ice is present. 2. Update software of N127 PTCU. 3. Check the exhaust flap for free movement. 4. Replace exhaust flap actuator. (P13C273 and P13C278‑ Right side flap, P140473‑ Left side flap). Ensure anti‑rattle spring is installed in correct position. 5. Clear fault codes and check exhaust flap for free movement via actuation. If fault code reoccurs: ‑Replace muffler with exhaust flap actuator. Note: For vehicles with two exhaust flap actuators, the left and right actuator have different part numbers. Installing two of the same side part number will cause fault codes due to missing LIN messages.

Owners of these vehicles have filed 13 complaints in the electrical category.