P1399 on Honda
On Honda and Acura, a random misfire that the computer cannot pin on one cylinder
Severity: Severity not verified — if the car runs badly, have it inspected
We have not sourced a severity ruling for P1399. A misfire can still damage the catalytic converter, so have a shop look at it soon, and treat a flashing check engine light as urgent.
This page covers only what differs on Honda. For what P1399 means, the ranked causes and the test order, see the P1399 guide.
What's different on Honda
HondaYour car
2003 · Pilot
Supported by vehicle dataHonda bulletin 060103 covers a rough-running 2003 Pilot with P1399. A mechanic also cites valve adjustment or a blocked EGR passage on a 2003 Pilot.
2002–2003 · Odyssey
Supported by vehicle dataHonda bulletin 060103 covers a 2002-2003 Odyssey that runs rough at 40 to 70 mph with P1399. Whether the bulletin is still current is not verified.
060103Status unverified
Engine runs rough at 40 to 70 mph with P0301 to P0306 and P1399
2002–2003odyssey, pilot · NHTSA 10002700
Service tips for a rough-running engine with misfire codes and P1399 stored. The NHTSA summary does not give the repair.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
Sources and review
- Honda service bulletin 060103 (NHTSA 10002700 and 10002693): engine runs rough 40 to 70 mph with P0301-P0306 and P1399
- Q: OBD code P1399 (Honda Pilot)
- 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