Service bulletin LI20.10-P-074284

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

NHTSA's summary

Complaint Check engine light illuminated. Fault code P012800 current or stored in MRG1AMGV8 control unit. Cause Thermostat may not close completely Remedy 1-Perform coolant warmup test via fault P012800 and save the results 2-Drain coolant through fine sieve or filter and check for debris. 3-Remove and replace coolant thermostat. Check for any debris in thermostat or connections on engine. If debris found in step 2 or 3, flush engine and take pictures of debris. 4-Refill cooling circuit and clear faults. Warm engine during test drive. Allow to cool 6 hours. 5-Repeat coolant warmup test and save results. If LI was previously applied to the vehicle open a PTSS case with the below documents. -Initial quick test -MRG1AMGV8 control unit log -Coolant warmup tests before and after repair from previous visit -Coolant warmup test from current visit

The document

• NHTSA's copy of the document (PDF)
• If that address does not open, try this one

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine, Equipment and accessories

Trouble codes named

P0128

Listing a model year does not mean every vehicle of it is concerned: the document says which.

• Bulletins for another vehicle
• Report an error on this page
• Report an error by email