# Service bulletin B20\-021

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.

- Type: Service bulletin
- NHTSA id: 10184664
- Published by NHTSA: 2020\-12\-23
- Manufacturer's number: B20\-021
- Manufacturer's date: 2020\-12\-18
- NHTSA component: ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING

## NHTSA's summary

"Service Bulletin \- The motor power inverter \(MPI\), also known as the intelligent inverter unit \(IIU\), may fail over time due to a defective solder joint. This failure may result in one or more of the following DTC\(s\): \-P1440 \(MPI Module Output Circuit Malfunction\) \-P1437 \(MPI Module Short Circuit\) \-P15A5 \(Motor Current Sensor Circuit Malfunction\) \-P0A78 \(MPI Module Internal Circuit Malfunction\) \-P0AE1 \(Bypass Contractor Malfunction\) \-P0A3C \(Motor Control Module \(MCM\) Overheating\) \-P0A3F \(Motor Rotor Position Sensor Circuit Malfunction\) \-P0DA8 \(MPI Module Voltage Malfunction\) \-P1634 \(MPI Module Signal Circuit Malfunction\) \-P0AEE \(MPI Internal Circuit Malfunction\) \-P0A27 \(High Voltage Contactor Stays Activated\) American Honda is extending the warranty coverage of the motor power inverter \(MPI\) on these vehicles to 15 years from the original date of purchase or 150,000 miles, whichever comes first."

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10184664-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10184664-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system, Engine

## Trouble codes named

P0A27, P0A3C, P0A3F, P0A78, P0AE1, P0AEE, P0DA8, P1437, P1440, P15A5, P1634

## Vehicles listed

- 2013 ACURA ILX HYBRID

## Other bulletins for the same vehicles and component

- [ONLB9702252021](/bulletins/10187898.md), 2021-03-02, Service bulletin: ENGINE AND ENGINE COOLING. Owner Notification Letter \- This warranty only covers vehicles that have a defective motor power inverter, also known as intelligent inverter unit. The motor power inverter may fail over time due to a defective solder joint. This failure will result in the charging system, PGM\-FI system, and IMA system warning lights coming on. The decreased power supply to the 12\-volt battery can lead to a series of system malfunctions.
- [BBOM12182020](/bulletins/10184665.md), 2020-12-23, Service bulletin: EQUIPMENT; ELECTRICAL SYSTEM. Dealer Message \- Today, December 18, 2020, Acura is announcing a warranty extension for certain 2013 ILX Hybrid vehicles. This warranty extension covers the intelligent inverter unit \(IIU\) to address possible concerns of various warning lights turning on and diminishing electric motor power, braking or steering assistance control. American Honda is extending the warranty coverage of the IIU to 15 years from the original date of purchase or 150,000 miles, whichever comes first.
- [BBOM08092018901](/bulletins/10144045.md), 2018-09-04, Service bulletin: ENGINE AND ENGINE COOLING. Dealer message \- Today, Acura is notifying dealers of a voluntary noncompliance recall for a small number of Acura vehicles due to an error on the replacement \(service part\) underhood emissions labels. American Honda previously notified CARB and the EPA for this action.
- [Service Bulletin](/bulletins/10129554.md), 2018-03-05, Service bulletin: ENGINE AND ENGINE COOLING. Service bulletin \- The MIL comes on and DTC P0455 \(EVAP system large leak\) and/or DTC P0456 \(EVAP system very small leak detected\) is set. The fuel fill cap \(gas cap\) may also be loose or have a stick\-slip feeling when tightened. The fuel fill cap gasket creates too much friction, preventing the cap from sealing properly.
- [BTS180203](/bulletins/10129341.md), 2018-02-26, Service bulletin: ELECTRICAL SYSTEM. Tech line summary article \- We?re currently looking at an issue that when connected to Bluetooth® HandsFreeLink® using an iPhone with iOS 11, there?s no phonebook showing up on the On Demand Multi\-Use Display? \(ODMD\). If the phonebook doesn?t download, clients will have trouble accessing phonebook contacts using the voice control system.
- [DLR MSG \- RFP \-](/bulletins/10129295.md), 2018-02-26, Service bulletin: ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Dealer message \- American Honda \(AHM\) is investigating certain 2013ILXs with a customer complaint of a no\-start condition which requires the 12V battery to be replaced. To fully understand the cause of this occurrence, AHM would like to collect a certain part prior to you attempting a repair of any kind.
- [DLR MSG \- RFP \-](/bulletins/10129270.md), 2018-02-26, Service bulletin: ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Dealer message \- American Honda \(AHM\) is investigating certain 2013 ILXs with a customer complaint of a no\-start condition which requires the 12V battery to be replaced. To fully understand the cause of this occurrence, AHM would like to collect a certain part prior to you attempting a repair of any kind.
- [DLR MSG \- RFP \-](/bulletins/10128859.md), 2018-02-21, Service bulletin: ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Dealer message \- American Honda \(AHM\)is investigating certain 2013ILXs with a customer complaint of a no\-start condition which requires the 12V battery to be replaced. To fully understand the cause of this occurrence, AHM would like to collect a certain part prior to you attempting a repair of any kind.
- [DLR MSG \- RFP \-](/bulletins/10128550.md), 2018-02-12, Service bulletin: ELECTRICAL SYSTEM:STARTER ASSEMBLY; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Dealer message \- American Honda \(AHM\)is investigating certain 2013 ILXs with a customer complaint of a no\-start condition which requires the 12V battery to be replaced. To fully understand the cause of this occurrence, AHM would like to collect a certain part prior to you attempting a repair of any kind.
- [DLR MSG \- RFP \-](/bulletins/10127652.md), 2018-02-05, Service bulletin: ELECTRICAL SYSTEM. Dealer message \- American Honda \(AHM\) is investigating certain 2013 ILXs with a customer complaint of a no\-start condition which requires the 12V battery to be replaced. To fully understand the cause of this occurrence, AHM would like to collect a certain part prior to you attempting a repair of any kind.

JSON: [/v1/bulletins/10184664](/v1/bulletins/10184664)

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