Why Did the Radio Lock and Ask for a Code?
Honda's Display Audio system uses the same anti-theft design as earlier radios: losing battery power causes a code request at next startup. Applies to both the non-touchscreen radio and the Display Audio touchscreen.
- Battery replacement — the most common trigger.
- Battery disconnect during repairs — any work that cuts battery power will activate the lock.
- Completely dead battery — a drained battery also triggers the request.
Worth knowing: many higher-trim Display Audio models from this era might not use a traditional code-based lock — if the radio never prompted for a code after a battery change, it could have a different anti-theft method tied to the vehicle VIN.
Can't Find Your Unit's Serial Number? Follow The Steps Below for Honda Passport 2022
The important thing to know is that factory radios use a specific serial number to identify each unitindividually.
The anti-theft system matches the code directly to this serial.
Different from car-specific data such as VIN or registration info, it is not determined by the model or production year, so you'll be able to get it even if you have an aftermarket radio.
Depending on the manufacturer and radio installed in your Honda Passport, the retrieval method varies.
Here are the best ways to find it.
Factory Radios on the 2022 Passport (Mid-Cycle Refresh)
For 2022 Honda gave the Passport a mid-cycle refresh that included a rugged new front fascia, the all-new TrailSport trim, and a standardisation of the infotainment line-up. The biggest change for radio-code purposes is that the 2022 Passport made the 8-inch Display Audio with Apple CarPlay and Android Auto standard across the entire line-up, including the entry-level Sport trim - the older 5-inch Audio is gone.
8-inch Display Audio with High-Resolution Touch-Screen (Sport, EX-L, TrailSport, Touring, Elite). Visual ID: an 8-inch landscape touchscreen with capacitive Home, Back and Brightness controls down the left edge and a volume/power knob. Apple CarPlay and Android Auto are standard across every trim, along with Bluetooth HandsFreeLink, SiriusXM, HD Radio and HondaLink. Software is updatable wirelessly over Wi-Fi.
8-inch Display Audio with Honda Satellite-Linked Navigation (Touring, Elite). The same 8-inch hardware as the standard unit but with factory navigation built into the head unit and turn-by-turn directions displayed on the central screen. Touring and Elite trims pair this unit with a 10-speaker, 590-watt premium audio system; Sport, EX-L and TrailSport trims keep the 7-speaker, 215-watt audio system with subwoofer (the same speaker count as before, but now matched with the 8-inch head unit on Sport for the first time).
Standard across every 2022 Passport. SiriusXM-ready hardware (subscription required after the trial), Bluetooth HandsFreeLink, steering-wheel audio controls, an MP3/auxiliary input jack inside the centre console, a 12V outlet and a USB charging port in the console, and a 215-watt 7-speaker minimum audio system. The Elite trim adds wireless phone charging and the premium 10-speaker setup.
For code retrieval the head unit you need to identify is the 8-inch Display Audio module - it is the only family in the 2022 Passport. Audio package and trim level change the speakers, amplifier and whether built-in navigation is present, but not which physical head-unit module sits in the dash.
Access Your Serial on the Radio Screen
The method for 2022 Honda Passport is this:
The 2022 Honda Passport could have Honda's Display Audio system (5" depending on trim) or a standard non-touchscreen radio. Both types support serial number display via the 1+6 button method:
- Turn ignition to ON. Wait for the radio to power up. The screen shows "CODE" if locked.
- Simultaneously press preset buttons 1 and 6 for 3-5 seconds.
- The serial number displays in two halves (e.g.,
U3210+L0482).
Alternative: On 2022 Passport with the Display Audio touchscreen, check Settings → System → Device Information – the serial may be shown there without needing the button combination.
Serial Number on the Unit
If the serial number cannot be accessed via display, use the hardware method.
Most Honda Passport factory radios include a sticker with the serial number printed on the housing.
Step-by-Step:
- Turn off the vehicle.
- Remove the bezel surrounding the radio.
- Loosen the fasteners.
- Pull the unit slightly out to access the label.
The serial number is usually located near the barcode.
If neither methods work on the 2022 Honda Passport:
- Power down the vehicle.
- Detach the dashboard trim. The 2022 Passport's modern dashboard uses friction clips.
- For Display Audio models: Unscrew the fasteners (Phillips) securing the screen unit.
- On base trims: Unscrew the four screws holding the head unit.
- Ease the unit forward and locate the serial on the label on the back or side.
Tip: The touchscreen unit is larger and more integrated than the base radio. Take care when extracting it.
How to Remove the Head Unit and Find the Serial Sticker
Safety first. Park on a flat surface, set the parking brake, switch the ignition off and remove the key/fob from the cabin. Disconnect the negative (-) terminal of the 12V battery and wait at least three minutes for the SRS (airbag) capacitor to discharge before touching anything in the centre stack - the passenger airbag harness runs near the head-unit bezel on the 2022 refresh dash.
Tools. Plastic trim removal tools, a 10mm socket on a short extension, and a small Phillips screwdriver. Apply masking tape around the bezel to protect the soft-touch dash trim from scuffs while prying.
Release the centre bezel. The 2022 Passport's centre stack remains a one-piece gloss-black panel surrounding the head unit and the climate controls (the refresh changed the front grille and exterior trim, not the centre dashboard architecture). Insert a plastic trim tool at the lower edge and work the spring clips along the bottom loose first, then up each side. The whole panel comes forward as one piece. Tilt it toward you and disconnect the climate-control and accessory connectors at the back so the panel can be set aside.
Unbolt the head unit. Four 10mm bolts hold the radio chassis into the dashboard cradle - two at the top corners and two at the bottom corners. Remove all four, slide the unit out a few centimetres toward you, then disconnect the rear wiring harness, antenna lead, USB ribbon and HDMI ribbon connectors. The head unit is now free.
Read the serial. The serial number sticker is on the top or side of the metal radio chassis - a small white label with a barcode and an alphanumeric serial. Photograph it with your phone before reinstalling.
Reassembly. Reverse the sequence: rear connectors first, four 10mm bolts back in, climate panel connectors reattached, trim bezel pressed back into its spring clips, battery negative reconnected last. The radio will request its anti-theft code on first power-up.
Dealer alternative. A Honda dealer can read the radio serial through their HDS (Honda Diagnostic System) tool on the OBD-II port without removing the unit at all - normally the lowest-risk path on a near-new Passport still under warranty.
Example: Honda Passport serial number label location
Typical Serial Number Formats for 2022 Passport Radios
Based on the radio installed in the 2022 Honda Passport:
U1234L5678– Most common Honda OEM formatHBM####– Found on Display Audio and nav-equipped units913A####– Some Alpine-manufactured radios
The 2022 Passport may have: base CD radio (U/L format), Display Audio 5"/7" (HBM format), or navigation unit (HBM format). All use a 5-digit unlock code.
Important Verify you copy the serial number, not the part number (which starts with 39100, 39101, or similar Honda part coding).
Serial Format on the 2022 Passport
The 2022 Passport's 8-inch Display Audio head unit (the only audio family in the refreshed line-up) uses the standard Honda 8-character alphanumeric serial. The string contains only digits 0-9 and uppercase letters A-Z, with no spaces, dashes or special characters, and is laser-printed or sticker-printed onto the metal chassis of the unit. On older Honda single-DIN radios the same serial is shown in a split 'U' (upper) and 'L' (lower) format on a dealer-mode display that you concatenate to form the 8-character string - whether the 2022 Passport Display Audio still supports that split-display dealer-mode is not publicly confirmed, so the safest reference is always the chassis sticker or an HDS read at a Honda dealer.
Steps to Unlock Your 2022 Honda Passport Radio
- Skip long troubleshooting discussions or service visits - you can generate the code online with the radio serial number.
- Start by finding the serial number. It is always present on the unit itself, and sometimes it can be visible on the Passport's radio screen.
- Enter it into the generator above, and the software will identify the correct 2022 Passport unlock code.
- When you receive the code, input it using Passport's radio controls to unlock the system fully.
- The entire process takes only a few minutes and requires no VIN, documents, or technical knowledge.
Unlocking the Radio After Code Generation
Once the system gives you 2022 Honda Passport unlock code from the serial, you're ready to reactivate the radio.
Some drivers hesitate at this stage because input process can look different across radio versions, but it's usually simple.
When the radio shows dashed lines, it means the unit is waiting for the correct numbers.
In-depth Entering Instructions for Passport 2022
To enter the code on the 2022 Honda Passport:
- Ignition ON. Radio displays "CODE" or "ENTER CODE".
- Non-touchscreen models: Press preset buttons 1-5 to select each digit, then hold button 6 to confirm.
- Display Audio touchscreen: An on-screen keypad may appear. Tap each digit and press "Enter" or "OK".
Lockout: Three wrong codes trigger a 60-minute lockout. Leave ignition ON. Do not cycle the key or the timer starts over.
Entering Your Code on the 2022 Passport
Where to get the code. Entering the code on the 8-inch Display Audio. Every 2022 Passport uses the same 8-inch touchscreen unit (Sport, EX-L, TrailSport, Touring, Elite), so the entry workflow is the same across all trims. When the unit prompts 'Enter Code', a numeric keypad appears on the touchscreen. Tap the five digits of your code in order, then tap Enter (or Done) on the touchscreen. The radio resumes normal operation if the code is accepted, or shows the number of remaining attempts if it is rejected. Lockout protection. Honda head units typically lock out after about ten failed attempts and need a one-hour cooldown with the radio powered on before further attempts are accepted - leave the ignition in accessory and the radio on, then try again after an hour. VIN-pairing. Some 2022 Display Audio units may revalidate against the VIN through HDS after a 12V battery disconnect. If the correct code is rejected and the radio still refuses to unlock, a Honda dealer can re-pair the head unit through their diagnostic tool, normally as a quick service-bay job. Quick check before you start. Before you request a code, look in the obvious places - the owner's manual pouch, the glovebox and any paperwork delivered with the car at purchase. Honda dealers often place a small white label with the radio anti-theft code in the glovebox or the owner's manual wallet at delivery, which avoids the portal request entirely.
Troubleshooting Common Radio Problems - Passport 2022
The Display Audio era spans radios using different serial formats depending on the trim level:
U####L####— base CD radio serial (10 characters, two halves).HBM####— Display Audio 5"/7" and navigation units.913A####— some Alpine OEM configurations.
Part numbers on the same label start with 39100 or 39101 — these are not serials. If uncertain, use the Settings → Device Information menu or the 1+6 button method to pull the serial directly from the unit.
If the Display Audio screen powers on but shows the home screen without any "CODE" prompt, consider these points:
- The radio may not be locked — certain battery changes skip the lock if done quickly enough.
- Certain Display Audio units, the code prompt appears only on the audio portion of the screen, not the navigation display — wait a few seconds after startup.
- Try the Settings → System → Device Information route; if the serial is visible there, the unit could still be functional without a code.
Should none of the above match, a fuse check is the next step — a blown fuse prevents the radio from powering on at all.
On the Display Audio, a rejected code most often means the serial was taken from the wrong source. Both the button method and the settings menu can produce the correct serial — confirm that the serial you submitted came from the radio unit and not from a sticker elsewhere in the car.
If the code was already entered once and rejected, stop and contact support before trying again — a second wrong attempt gets you one step closer to the 60-minute lockout. A no-charge serial reverification can be done on request.
Entry method depends on the exact radio variant in the Display Audio-era Passport:
- Non-touchscreen base radio: Press preset buttons 1–5 to cycle to each digit, then hold button 6 to confirm — same as older Honda platforms.
- Display Audio 5" or 7" touchscreen: An on-screen numeric keypad is shown when the code prompt is active. Enter the digits and press OK or Enter on screen.
If the touchscreen is unresponsive, try the physical preset buttons — some units accept both input method. Make sure the screen is fully booted before starting entry.
The Display Audio platform enforces the same three-try lockout as older Honda radios. Recovery steps:
- Maintain the ignition in ON or ACC — do not switch off.
- Allow the full 60-minute period. The touchscreen might dim during this time — that's normal.
- After 60 minutes, the code prompt returns and another attempt is possible.
On Display Audio touchscreen models, the lockout countdown operates even when the screen is off. Just leave the vehicle running or the ignition on ACC until the timer expires.