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Service bulletin A19-072

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10183516
Published by NHTSA2020-12-02
Manufacturer's numberA19-072
Manufacturer's date2020-11-24
NHTSA componentELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)

NHTSA's summary

"Service Bulletin - The MIL comes on with DTC P0430 (front bank catalyst system efficiency below threshold [bank 2]). Additionally, one or more of the following DTCs may also be stored: -P030X (misfire) -P219A (air-fuel ratio variation of cylinder [bank 1, rear bank]) -P219B (air-fuel ratio variation of cylinder [bank 2, front bank])"

The document

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

Electrical system, Transmission and driveline, Automatic transmission, Transmission control module

Trouble codes named

P0430, P219A, P219B

Vehicles listed
HONDA ODYSSEY2018
HONDA PILOT2017
HONDA RIDGELINE2017

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

Recalls for the same vehicles and component
19V2990002019-04-12. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; POWER TRAIN:AUTOMATIC TRANSMISSION

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
A23-0732023-09-13. Service bulletin. Service Bulletin - The vehicle's transmission temperature can become too hot due to automatic transmission fluid deterioration causing high foaming and low viscosity. During extended high load driving, the automatic transmission fluid will foam and cooler flow rate is reduced.
A23-0782023-09-06. Service bulletin. Service Bulletin - Torque converters may not have been manufactured to proper specifications. As a result, the torque converter lock-up clutch cannot provide adequate holding force due to pressure bleeding down through a crack in the lock-up piston. The reduced lock-up clutch capacity results in DTC P0741 Torque Converter Clutch Circuit Performance or Stuck OFF.
A21-0102021-02-18. Service bulletin. "Service Bulletin - The PCM software may misinterpret sensor inputs as a deteriorated catalytic converter. Additionally, debris from the high pressure pump or the fuel injector machining process can cause internal wear or clogging inside one or more injectors. One or more of the following DTCs may be stored: - P0420 (rear bank catalyst system efficiency below threshold [bank 1]) - P0430 (front bank catalyst system efficiency below threshold [bank 2]) - P0300-P0306 (misfire) - P219A (air-fuel ratio variation of cylinder [bank 1, rear bank]) - P219B (air-fuel ratio variation of cylinder [bank 2, front bank]) American Honda is extending the warranty on these repairs to 10 years from the original date of purchase or 150,000 miles, whichever comes first."
A20-1002021-02-18. Service bulletin. "Service Bulletin - The PCM software may misinterpret sensor inputs as a deteriorated catalytic converter. Additionally, debris from the high pressure pump or the fuel injector machining process can cause internal wear or clogging inside one or more injectors. One or more of the following DTCs may be stored: - P0420 (rear bank catalyst system efficiency below threshold [bank 1]) - P0430 (front bank catalyst system efficiency below threshold [bank 2]) - P0300-P0306 (misfire) - P219A (air-fuel ratio variation of cylinder [bank 1, rear bank]) - P219B (air-fuel ratio variation of cylinder [bank 2, front bank]) American Honda is extending the warranty on these repairs to 10 years from the original date of purchase or 150,000 miles, whichever comes first."
A19-0712019-07-11. Service bulletin. Service Bulletin - Auto idle stop does not work. The PCM incorrectly calculates battery current, which prevents auto idle stop from working.
AVE021420189012018-02-26. Service bulletin. Dealer message - Every Service Bulletin requires you to take an HDS snap shot and use the job aid or Tech2Tech to confirm the judder/shudder is coming from the torque converter.
Customer Letter2017-10-21. Service bulletin. Customer letter - On a limited number of 2016?17 Pilot vehicles, the 9-speed automatic transmission fluid (ATF) warmer may leak internally. If the ATF warmer leaks, you may notice one or more of the following symptoms: ? The vehicle overheats. ? The transmission shifts poorly. ? The transmission makes noise during shifting.
Customer Letter2017-10-21. Service bulletin. Customer letter - Your 2016 or 2017 Pilot previously had the transmission replaced because of a leaking 9-speed automatic transmission fluid (ATF) warmer. As the issue was under investigation when the transmission was replaced, your vehicle needs further action before it is completely repaired.
A17-0362017-09-27. Service bulletin. Service bulletin - The MIL comes on with DTC P0430 (front bank catalyst system efficiency below threshold [Bank 2]). The PCM software may misinterpret sensor inputs as a deteriorated catalytic converter.
A17-0352017-09-14. Service bulletin. Service bulletin - American Honda is extending the warranty on the 9-speed transmission warmers to 10 years from the original date of purchase with unlimited mileage. This warranty covers vehicles where the engine coolant and ATF mix because of an internal leak in the 9-speed transmission warmer.