Dodge B22A9
ECU Internal Performance - Discussion: When diagnosing any of the stored or active DTCs above, check for open RSUs on the vehicle. If
Quick answer
B22A9 is identified in the supplied Dodge evidence as “ECU Internal Performance.” For the 2024–2026 US Dodge Charger, official manufacturer communications associate variants of this code with specific diagnostic discussions, including checking for open RSUs in one communication. Driveability, charging safety, severity, and required service are not yet established by verified evidence.
This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.
Watch Videos
Relevant videos play here without leaving this diagnostic page.
Videos are supporting material and never override OEM or regulator evidence.
1. What does B22A9 mean?
B22A9 is identified in the supplied Dodge evidence as “ECU Internal Performance.” For the 2024–2026 US Dodge Charger, official manufacturer communications associate variants of this code with specific diagnostic discussions, including checking for open RSUs in one communication. Driveability, charging safety, severity, and required service are not yet established by verified evidence.
2. Technical explanation
The supplied records identify B22A9 as a Dodge DTC for ECU Internal Performance. One NHTSA-posted manufacturer communication lists B22A9-96 as “ECU Internal Performance—Component Internal Failure.” A separate communication lists B22A9-00 as “ECU Internal Performance” and states that, when diagnosing the stored or active DTCs addressed by that document, technicians should check for open RSUs on the vehicle. The supplied excerpt does not define RSU, identify the affected ECU, or provide the complete diagnostic or repair procedure.
3. What system is affected?
ECU / electronic control system. The exact control unit is not yet established by verified evidence.
4. How serious is this code?
Unknown. The supplied evidence does not assign a severity level.
5. Symptoms you may notice
- A stored or active B22A9 DTC may be present.
- No customer-visible symptoms are established by the supplied verified evidence.
6. Possible causes
- For B22A9-96, the official communication identifies “Component Internal Failure” in the DTC description.
- For B22A9-00, one official communication instructs technicians to check for open RSUs while diagnosing the listed DTCs.
- Any further root 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
- Record whether the code is stored or active and note any messages or vehicle behavior.
- Arrange diagnosis by an authorized Dodge service facility or qualified technician.
- Do not attempt ECU, antenna, radar, RSU, or high-voltage-system repairs based on this code alone.
10. Step-by-step troubleshooting
- A technician should use the applicable manufacturer diagnostic information for the exact B22A9 suffix and vehicle condition.
- For the B22A9-00 diagnostic discussion in NHTSA Manufacturer Communication 11020093, check for open RSUs as directed by that communication.
- The supplied evidence does not establish additional testing steps.
11. When to contact service
Service urgency is not yet established by verified evidence. If B22A9 is stored or active, arrange professional diagnosis, particularly if the vehicle displays other warnings or operating concerns.
12. What the service center may check
- Confirm the complete DTC, including suffix (for example, B22A9-00 or B22A9-96).
- Determine whether the DTC is stored or active.
- For the B22A9-00 discussion in Manufacturer Communication 11020093, check for open RSUs as specified in the manufacturer communication.
13. Possible repair or resolution
- No repair resolution is established by the supplied verified evidence.
14. Affected vehicles
- Dodge Charger · 2024–2025 · US
- Dodge Charger · 2026 · US
15. Related TSBs / service bulletins
- NHTSA Manufacturer Communication 11032845, 08-216-26, published May 14, 2026: lists B22A9-96 as “ECU Internal Performance—Component Internal Failure.”
- NHTSA Manufacturer Communication 11020093, S2508000012 REV.A, published June 25, 2025: lists B22A9-00 as “ECU Internal Performance” and includes a diagnostic discussion directing technicians to check for open RSUs for the listed stored or active DTCs.
16. Recall information
- No recalls are established by the supplied verified evidence.
17. Official manufacturer information
Verified applicability: US-market Dodge Charger model years 2024 through 2026. Sources: NHTSA-posted manufacturer communications 11032845 and 11020093.
19. Frequently asked questions
What does Dodge code B22A9 mean?
The supplied Dodge evidence identifies B22A9 as ECU Internal Performance. B22A9-96 is described as ECU Internal Performance—Component Internal Failure; B22A9-00 is described as ECU Internal Performance.
Is it safe to drive or charge with B22A9?
Not yet established by verified evidence.
What should be checked for B22A9-00?
The supplied excerpt from NHTSA Manufacturer Communication 11020093 says to check for open RSUs when diagnosing the listed stored or active DTCs. It does not provide further details in the supplied evidence.