Reductant Level Too Low

Check these first

• A DEF tank run below the minimum level
• A reductant level sensor A reading low or stuck
• A leak in the DEF tank, lines, or injector
• Contaminated or diluted DEF at low volume

What to do next

1. Check the DEF level in the tank
2. Refill the tank with fresh DEF
3. Inspect the DEF system for leaks
4. Read the reductant level sensor A on a scan tool
5. Repair any leak or replace the sensor A if the reading stays low
6. Clear the code and retest

Look up another code