P1449 Hybrid Code: Honda IMA Battery Deterioration
P1449 is a Honda IMA code and the more serious of the Honda battery codes. It means the IMA battery pack is failing regardless of what the voltage, state of charge, or current readings show. It affects the Honda Civic Hybrid, Insight, Accord Hybrid, and CR-Z.
What it usually means
The IMA pack has deteriorated to the point that it can no longer hold or deliver charge reliably.
Common symptoms
- IMA light on the dash
- Reduced fuel economy
- Loss of motor assist
- Frequent or stuck recalibration
What to do next
Plan for a battery replacement. Have a hybrid specialist confirm with a high-voltage battery test first.
Code Lookup Disclaimer: The explanations on this page are general and for information only. The same code can have different causes on different vehicles. Always confirm with a professional diagnosis before authorizing repairs or replacing parts.