EV Diagnostics
Verified EV diagnostic knowledge page

Dodge B197B

Signal Invalid • B197C Pawl Detent Switch - Signal Invalid • B197F-13 Power Liftgate Latch Control 1 - Circuit Open •

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceProfessional service is appropriate if the latch does not cinch properly or if stored DTCs return. The supplied evidence does not establish urgency, drivability, or charging restrictions.
Confidence95%

Quick answer

For a 2024–2026 Dodge Charger in the US, B197B is listed in an official manufacturer communication as “Ratchet Fork Switch - Signal Invalid.” The same communication also lists B197C and B197F-13 as common related latch codes. It directs clearing stored DTCs, cycling the door, and confirming that the latch cinches properly.

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 B197B mean?

For a 2024–2026 Dodge Charger in the US, B197B is listed in an official manufacturer communication as “Ratchet Fork Switch - Signal Invalid.” The same communication also lists B197C and B197F-13 as common related latch codes. It directs clearing stored DTCs, cycling the door, and confirming that the latch cinches properly.

2. Technical explanation

Verified evidence identifies B197B as a Ratchet Fork Switch signal-invalid DTC. The official manufacturer communication groups it with B197C, “Pawl Detent Switch - Signal Invalid,” and B197F-13, “Power Liftgate Latch Control 1 - Circuit Open,” as common DTCs. The provided evidence does not establish a specific failed component or root cause for B197B.

3. What system is affected?

Latch/door operation is implicated by the verified manufacturer communication. The diagnostic record does not provide a more specific system name.

4. How serious is this code?

Not yet established by verified evidence.

5. Symptoms you may notice

  • The official communication instructs checking whether the latch cinches properly.
  • No other symptoms are established by the supplied verified evidence.

6. Possible causes

  • 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

  • Clear stored DTCs as directed in the official manufacturer communication.
  • Cycle the door and review its proper functioning.
  • Confirm that the latch cinches properly.
  • If the latch does not cinch properly or the code returns, arrange professional service.

10. Step-by-step troubleshooting

  1. Use an appropriate diagnostic scan tool to clear stored DTCs.
  2. Cycle the door after clearing the DTCs.
  3. Review whether the door operates properly.
  4. Verify that the latch cinches properly.
  5. No further diagnostic procedure is established by the supplied evidence.

11. When to contact service

Professional service is appropriate if the latch does not cinch properly or if stored DTCs return. The supplied evidence does not establish urgency, drivability, or charging restrictions.

12. What the service center may check

  • Clear all stored DTCs.
  • Cycle the door to review proper functioning.
  • Make sure the latch cinches properly.

13. Possible repair or resolution

  • Not yet established by verified evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • NHTSA Manufacturer Communication PDF 11034351: S2623000041 REV.A, published June 19, 2026. It lists B197B Ratchet Fork Switch - Signal Invalid, B197C Pawl Detent Switch - Signal Invalid, and B197F-13 Power Liftgate Latch Control 1 - Circuit Open as common DTCs and directs clearing stored DTCs, cycling the door, and confirming latch cinching.
  • NHTSA Manufacturer Communication PDF 11033895: S2623000041, published June 5, 2026. It contains the same listed common DTCs and the same basic check procedure.

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Official NHTSA-hosted manufacturer communications: https://static.nhtsa.gov/odi/tsbs/2026/MC-11034351-0001.pdf and https://static.nhtsa.gov/odi/tsbs/2026/MC-11033895-0001.pdf. Verified applicability: 2024–2026 Dodge Charger, US.

19. Frequently asked questions

What does Dodge code B197B mean?

The verified manufacturer communication identifies B197B as “Ratchet Fork Switch - Signal Invalid.”

Which vehicles are covered by the supplied evidence?

The supplied applicability data identifies US-market 2024–2026 Dodge Charger vehicles.

What should be checked after B197B is stored?

The official communication directs clearing stored DTCs, cycling the door to review proper operation, and making sure the latch cinches properly.

Is B197B safe to drive with?

Not yet established by verified evidence.

Are B197C and B197F-13 related?

Yes. The official communication lists B197C and B197F-13 as common DTCs alongside B197B.

20. Sources & verification

Verified
Dodge B197B: Signal Invalid • B197C Pawl Detent Switch - Signal… | EV Diagnostics