EV Diagnostics
Verified EV diagnostic knowledge page

Volvo P09019A

If above Diagnostic Trouble Codes (DTCs) are set, follow advice under “Service”. ERAD=Electric Rear Axle Drive IEM = Inverter ERAD Module SERVICE: Revised IEM software has been rel

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceService is appropriate because the verified Volvo technical journal provides a software-update action for this DTC. The evidence does not establish whether service is urgent.
Confidence95%

Quick answer

For specified 2017–2018 US Volvo S90, XC60, and XC90 vehicles, P09019A is listed as an intermittent fault in the IEM (Inverter ERAD Module). Volvo Technical Journal 33723.1.0 directs service personnel to install revised IEM software according to TJ 31543.

This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.

Video guides

Watch Videos

Relevant videos play here without leaving this diagnostic page.

No sufficiently relevant embeddable video has been accepted for this diagnostic yet.

Videos are supporting material and never override OEM or regulator evidence.

1. What does P09019A mean?

For specified 2017–2018 US Volvo S90, XC60, and XC90 vehicles, P09019A is listed as an intermittent fault in the IEM (Inverter ERAD Module). Volvo Technical Journal 33723.1.0 directs service personnel to install revised IEM software according to TJ 31543.

2. Technical explanation

ERAD means Electric Rear Axle Drive, and IEM means Inverter ERAD Module. In Volvo Technical Journal 33723.1.0, DTC P09019A is listed under the IEM with fault type “Intermittent.” The bulletin states that revised IEM software has been released and instructs an IEM software upgrade according to TJ 31543.

3. What system is affected?

Electric Rear Axle Drive (ERAD), specifically the Inverter ERAD Module (IEM).

4. How serious is this code?

Not yet established by verified evidence.

5. Symptoms you may notice

  • Not yet established by verified evidence.

6. Possible causes

  • The verified bulletin identifies P09019A as an intermittent IEM fault.
  • A specific underlying hardware or electrical cause is not yet established by verified evidence.

7. Can I still drive the vehicle?

Not yet established by verified evidence.

8. Can I charge the vehicle?

Not yet established by verified evidence.

9. What you can safely do

  • Arrange diagnosis by a Volvo service provider or qualified service facility.
  • Provide the stored DTC P09019A and ask the facility to review Volvo Technical Journal 33723.1.0 and the referenced TJ 31543 software procedure.

10. Step-by-step troubleshooting

  1. Use appropriate diagnostic equipment to confirm the stored DTC and its control-module association.
  2. For an applicable vehicle with P09019A, follow the service direction in Volvo Technical Journal 33723.1.0: perform the revised IEM software upgrade according to TJ 31543.
  3. No further diagnostic sequence is established by the supplied verified evidence.

11. When to contact service

Service is appropriate because the verified Volvo technical journal provides a software-update action for this DTC. The evidence does not establish whether service is urgent.

12. What the service center may check

  • Confirm applicability by vehicle model year, model, and US market.
  • Confirm P09019A is stored in the IEM and identified as intermittent.
  • Review and perform the IEM software upgrade procedure referenced as TJ 31543.

13. Possible repair or resolution

  • Volvo Technical Journal 33723.1.0 states that revised IEM software has been released and directs an upgrade according to TJ 31543.
  • Whether the software upgrade resolves an individual vehicle’s condition is not yet established by verified evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Volvo Technical Journal 33723.1.0, published May 8, 2018; NHTSA Manufacturer Communication 10149954.
  • Volvo Technical Journal 33723.1.0, published May 15, 2018; NHTSA Manufacturer Communication 10164136.
  • Both supplied official communications list P09019A as an intermittent IEM DTC and state that revised IEM software is available, with upgrade according to TJ 31543.

16. Recall information

  • No recall is established by the supplied verified evidence.

17. Official manufacturer information

Official NHTSA-hosted Volvo manufacturer communication: https://static.nhtsa.gov/odi/tsbs/2018/MC-10164136-9999.pdf

19. Frequently asked questions

What does P09019A refer to in the supplied Volvo evidence?

It is listed as an intermittent DTC in the IEM, which Volvo defines as the Inverter ERAD Module.

What is ERAD?

ERAD means Electric Rear Axle Drive.

What does Volvo direct for P09019A?

Technical Journal 33723.1.0 says revised IEM software has been released and directs a software upgrade according to TJ 31543.

Can I continue driving or charging?

Not yet established by verified evidence.

20. Sources & verification

Verified
Volvo P09019A: If above Diagnostic Trouble Codes (DTCs) are set,… | EV Diagnostics