P1440 on Honda
On Honda and Acura hybrids, motor power inverter module output circuit malfunction; on Toyota, secondary air injection control valve circuit, bank 1
Severity: Inspect soon
On the Honda and Acura hybrids this is an inverter fault in the high-voltage system, and owners report jerking, reduced power and a pull-over warning, so treat it as urgent.
It gets more serious if:
- Stop: Stop somewhere safe and arrange a tow if the car jerks, loses power, shows a pull-over warning or the IMA system stops charging. Two Acura ILX owners describe a sudden jerk and reduced power with this fault.
This page covers only what differs on Honda. For what P1440 means, the ranked causes and the test order, see the P1440 guide.
What's different on Honda
HondaYour car
2012–2015 · Civic
Supported by vehicle dataCivic Hybrid: Honda bulletin A20-030 lists P1440 among codes from the defective inverter solder joint.
A20-030Status unverified
Motor power inverter warranty extension (Civic Hybrid)
2012–2015civic · issued · NHTSA 10184658
Defective inverter solder joint can set P1440, P1437, P15A5, P0A78, P0AE1 and other codes; coverage extended to 15 years from the original date.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
Sources and review
- Honda bulletin A20-030: motor power inverter warranty extension, Civic Hybrid
- NHTSA complaint ODI 11485532 (2013 Acura ILX, P1440)
- NHTSA complaint ODI 11534323 (2013 Acura ILX)
- Last reviewed
- Written by
- Saurabh K.
- Editorial review
- Pending
- Technician review
- Technician review pending
This page explains what a code usually means; it is not a substitute for a professional inspection. How we source and review · Report an error