Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Keyless Access Control Unit DTCS (2013 2014 2015)
2018 Acura ILXSECTION Keyless Access Control Unit DTCS (2013 2014 2015)
Keyless Access Control Unit
| DTC | Description | DTC type |
|---|---|---|
| B1601 | Keyless access ECU CPU error | Internal error |
| B1602 | Keyless access ECU EEPROM error | Internal error |
| B1632 | MTR CONT signal error | Signal error |
| B1640 | RF unit not connected | Signal error |
| B1641 | RF2 unit transmitter/receiver circuit malfunction | Signal error |
| B1646 | Driver door antenna circuit open or short | Signal error |
| B1648 | Front passenger door antenna circuit open or short | Signal error |
| B1658 | Trunk/tailgate/rear bumper antenna circuit open or short | Signal error |
| B1660 | Front interior antenna circuit open or short | Signal error |
| B1664 | Rear interior antenna (middle interior LF antenna) circuit open or short | Signal error |
| B1668 | Trunk room antenna (rear interior LF antenna) circuit open or short | Signal error |
| U0199 | Keyless access - P/W communication error | Loss of communication |
| U1280 | Keyless access ECU bus line error | Loss of communication |
| U1281 | Keyless access control unit lost communication with MICU | Loss of communication |
| U128D | Keyless access control unit lost communication with gauge control module | Loss of communication |
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.