Jeep C1503
31 C1502-31 C1503-31 C1504-31 tire pressure sensor mechanical failure/no signal. TPM lamp may be on. Condition could be intermittent or active. Discussion: T
Quick answer
For verified 2021–2025 US Jeep Grand Cherokee, Wagoneer, and Wrangler applicability, DTC C1503 is documented as a tire-pressure-sensor mechanical-failure/no-signal condition. The TPM warning lamp may be on, and the condition may be intermittent or active.
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 C1503 mean?
For verified 2021–2025 US Jeep Grand Cherokee, Wagoneer, and Wrangler applicability, DTC C1503 is documented as a tire-pressure-sensor mechanical-failure/no-signal condition. The TPM warning lamp may be on, and the condition may be intermittent or active.
2. Technical explanation
Official manufacturer communications list C1503, including C1503-31, among TPMS DTCs for tire-pressure-sensor mechanical failure/no signal. A separate official communication states that a failed remote-start antenna can cause issues with multiple tire-pressure sensors; C1503-31 may be present along with B1A76-13 and other TPMS DTCs. The supplied evidence does not establish that this is the cause in every vehicle with C1503.
3. What system is affected?
Tire Pressure Monitoring System (TPMS).
4. How serious is this code?
Not yet established by verified evidence.
5. Symptoms you may notice
- TPM lamp may be on.
- The condition may be intermittent or active.
- C1503 or C1503-31 may be stored.
6. Possible causes
- A tire-pressure-sensor mechanical-failure/no-signal condition is documented.
- A failed remote-start antenna can cause issues with multiple tire-pressure sensors in the scenario described by the official communication.
- Whether a remote-start antenna is the cause for a particular C1503 event 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
- Check actual tire pressures using an appropriate gauge and follow the vehicle’s tire-pressure label and owner information.
- Arrange diagnosis by an authorized or qualified service provider if the TPM lamp is on or C1503 remains present.
- Do not assume the affected tire’s pressure status from the warning lamp or DTC alone.
10. Step-by-step troubleshooting
- A qualified technician can confirm whether C1503/C1503-31 is active or intermittent and assess the TPMS fault.
- When applicable, a qualified technician can consider the official communication describing remote-start-antenna involvement with multiple tire-pressure-sensor issues.
- Further diagnostic steps are not established by the supplied verified evidence.
11. When to contact service
Service evaluation is appropriate when the TPM lamp is illuminated or C1503/C1503-31 is present. The supplied evidence does not establish urgency or a specific repair for every occurrence.
12. What the service center may check
- Confirm stored TPMS diagnostic codes and whether the condition is active or intermittent.
- Assess the tire-pressure-sensor mechanical-failure/no-signal condition indicated by C1503/C1503-31.
- If multiple TPMS sensor issues are present in the applicable official-communication scenario, consider the documented possibility of a failed remote-start antenna.
13. Possible repair or resolution
- Not yet established by verified evidence for an individual vehicle.
- The supplied official communications document the condition and a possible remote-start-antenna contribution in a specified multi-sensor scenario, but do not establish a universal repair from the supplied excerpts.
14. Affected vehicles
- Jeep Grand Cherokee · 2021–2025 · US
- Jeep Wagoneer · 2021–2025 · US
- Jeep Wrangler · 2021–2025 · US
15. Related TSBs / service bulletins
- NHTSA Manufacturer Communication S2422000001 REV.D, published July 23, 2025: documents C1501–C1504 and -31 variants as tire-pressure-sensor mechanical failure/no signal; the TPM lamp may be on and the condition may be intermittent or active. https://static.nhtsa.gov/odi/tsbs/2025/MC-11021039-0001.pdf
- NHTSA Manufacturer Communication S2208000138 REV.B, published July 4, 2025: states that a failed remote-start antenna can cause issues with multiple tire-pressure sensors and lists C1503-31 among associated TPMS DTCs. https://static.nhtsa.gov/odi/tsbs/2025/MC-11020600-0001.pdf
- NHTSA Manufacturer Communication S2422000001 REV.C, published November 8, 2024: documents the same tire-pressure-sensor mechanical-failure/no-signal condition and possible TPM-lamp illumination. https://static.nhtsa.gov/odi/tsbs/2024/MC-11010511-0001.pdf
16. Recall information
- No recall information was supplied or established by the verified evidence.
17. Official manufacturer information
Verified applicability: US-market 2021–2025 Jeep Grand Cherokee, Wagoneer, and Wrangler. Evidence is from official manufacturer communications published through NHTSA. Applicability beyond these vehicles is not established by the supplied verified evidence.
19. Frequently asked questions
What does Jeep code C1503 mean?
The supplied official evidence identifies C1503/C1503-31 as a tire-pressure-sensor mechanical-failure/no-signal condition.
Can C1503 be intermittent?
Yes. The official communication states that the condition could be intermittent or active.
Will the TPM warning lamp come on with C1503?
It may. The official communication says the TPM lamp may be on.
Can a remote-start antenna be involved?
An official communication states that a failed remote-start antenna can cause issues with multiple tire-pressure sensors and lists C1503-31 among associated TPMS codes. It does not establish this cause for every C1503 case.
Is it safe to drive or charge with C1503?
Not yet established by verified evidence.