Jeep B197B
Signal Invalid, B197C Pawl Detent Switch - Signal Invalid. Discussion: Analysis of returned parts has shown many latc
Quick answer
B197B is identified in verified Jeep service evidence as “Ratchet Fork Switch - Signal Invalid.” It is associated with the power liftgate latch system. B197C may also be present and is identified as “Pawl Detent Switch - Signal Invalid.”
This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.
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1. What does B197B mean?
B197B is identified in verified Jeep service evidence as “Ratchet Fork Switch - Signal Invalid.” It is associated with the power liftgate latch system. B197C may also be present and is identified as “Pawl Detent Switch - Signal Invalid.”
2. Technical explanation
Official manufacturer communications describe B197B-29 as a ratchet fork switch signal-invalid DTC and B197C-29 as a pawl detent switch signal-invalid DTC. The verified evidence links these codes to a power liftgate latch system that may not work or may work intermittently. The supplied evidence does not establish a specific component-level failure cause or a specific repair procedure.
3. What system is affected?
Power liftgate latch system.
4. How serious is this code?
Not yet established by verified evidence.
5. Symptoms you may notice
- Power liftgate latch system may not work.
- Power liftgate latch system may work intermittently.
- The malfunction indicator lamp (MIL) may illuminate.
- B197B-29 and/or B197C-29 may set.
6. Possible causes
- A specific root cause is not yet established by verified evidence.
- The manufacturer communication states that analysis of returned parts found many latches, but the supplied verified excerpt does not provide the complete finding or identify a confirmed failure mechanism.
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 an authorized Jeep service facility if the liftgate latch does not operate correctly, operates intermittently, or the MIL is illuminated.
- Do not rely on an intermittently operating liftgate latch to secure cargo without confirming that the liftgate is properly closed and latched.
10. Step-by-step troubleshooting
- Have the vehicle scanned for B197B-29 and B197C-29.
- Have a qualified technician evaluate operation of the power liftgate latch system.
- The supplied evidence states that a technician may or may not find DTCs set when the condition is present.
11. When to contact service
Contact an authorized Jeep dealer or qualified service facility for diagnosis of the power liftgate latch system, particularly if latch operation is intermittent or inoperative.
12. What the service center may check
- Confirm whether B197B-29, B197C-29, or both are stored.
- Evaluate whether the power liftgate latch system is inoperative or intermittent.
- Follow the applicable official manufacturer service communication. The specific inspection and repair steps are not included in the supplied verified evidence.
13. Possible repair or resolution
- A verified repair resolution is not provided in the supplied evidence.
- Official manufacturer communications exist for this condition; an authorized Jeep service facility can determine whether the relevant communication applies to the vehicle.
14. Affected vehicles
- Jeep Grand Cherokee · 2022–2025 · US
- Jeep Wagoneer · 2022–2025 · US
- Jeep Wagoneer · 2024–2025 · US
15. Related TSBs / service bulletins
- NHTSA Manufacturer Communication 11017363 / 23-021-25, published April 23, 2025. Verified summary: MIL illumination may occur with B197B-29 and/or B197C-29; customers may also experience liftgate-related symptoms, with the complete symptom text not included in the supplied excerpt.
- NHTSA Manufacturer Communication 11010749 / S2423000012 REV.C, published November 22, 2024. Verified summary: the power liftgate latch system may not work or may work intermittently; DTCs may or may not be set; B197B and B197C are referenced.
16. Recall information
- No recall is established by the supplied verified evidence.
17. Official manufacturer information
Verified official sources: NHTSA Manufacturer Communication 11017363 (23-021-25), published 2025-04-23: https://static.nhtsa.gov/odi/ffdd/tsbs/TSBS_RECEIVED_2025-2026.zip#nhtsa_id=11017363 ; NHTSA Manufacturer Communication 11010749 (S2423000012 REV.C), published 2024-11-22: https://static.nhtsa.gov/odi/tsbs/2024/MC-11010749-0001.pdf
19. Frequently asked questions
What does Jeep code B197B mean?
Verified evidence identifies B197B as “Ratchet Fork Switch - Signal Invalid.” The official communication also lists the formatted DTC as B197B-29.
What system is associated with B197B?
The supplied official manufacturer communication associates B197B with the power liftgate latch system.
Can B197B occur without a stored code being found during service?
Yes. One verified manufacturer communication states that the power liftgate latch system may not work or may work intermittently and that a technician may or may not find DTCs set.
Does B197B mean the vehicle is unsafe to drive or charge?
Not yet established by verified evidence.
Which Jeep vehicles are listed in the supplied applicability data?
Jeep Grand Cherokee model years 2022-2025 in the US, and Jeep Wagoneer model years 2022-2025 in the US. The supplied data also contains a duplicate narrower Wagoneer entry for 2024-2025.