To get a Nissan radio code you need the head unit serial number, which on most Nissans is printed on a label on top of the radio casing and starts BP or PP. Enter that serial on this page and the code is retrieved for £19.99, refunded in full if no working code can be supplied.
Radio codes belong to the head unit serial number, not the vehicle registration or VIN.
A flat battery, battery replacement or radio removal is what triggers the code prompt.
Nissan serial formats: Clarion units (e.g. PP1234567); Bosch units (e.g. BP1234567); Renault-alliance units (e.g. K123).
Display messages: CODE = The security code is required. · Err / Error = Incorrect code entered. · LOC / LOCKED = Attempt limit reached. Leave the ignition on and the unit powered until the lockout clears.
Bob's never displays a guessed or generated code — if a working code can't be retrieved you get a full refund.
Where to find the serial number, what the display messages mean and how to key the code back in on a Nissan.
The Nissan radio code is a security code held against the head unit serial. It exists purely as theft deterrence, and because the unit holds the lock rather than the car, moving the radio between vehicles will not clear it.
When you'll be asked for the code:
After a flat battery or a battery replacement
Following accident repair where the dash was stripped
When a used unit is fitted from a breaker's vehicle
After a permanent-live fuse failure behind the glovebox
Serial number formats:
Clarion units — for example PP1234567. Serial usually starts PP or BP on the casing label.
Bosch units — for example BP1234567. Common on Qashqai and X-Trail.
Renault-alliance units — for example K123. Later Micra and NV200 may use a Renault-style short pre-code.
How to find the serial number:
Check the handbook wallet and service book first — Nissan dealers often recorded the code.
Most Nissan units need removing to read the serial: the fascia trim clips off, then four screws release the unit.
On a Qashqai the trim panel around the vents unclips by hand — work slowly with a plastic trim tool to avoid breaking the clips.
Read the label on the top of the casing and note both the serial and the supplier.
If the unit is Renault-branded internally, look for a PRE-CODE line rather than a long serial.
What the display messages mean:
CODE — The security code is required.
Err / Error — Incorrect code entered.
LOC / LOCKED — Attempt limit reached. Leave the ignition on and the unit powered until the lockout clears.
How to key the code in:
Use the preset buttons 1 to 4 to set each digit.
On units with a rotary control, turn to select and press to advance.
Confirm with the ENTER, OK or preset 5 button depending on the unit.
If the unit rejects the code, stop and re-check the serial before further attempts.
Which Nissans actually need a radio code
Not every Nissan is locked behind a four-digit audio code, and knowing which camp your car falls into saves pulling a radio out for nothing. Anything with a separate CD head unit — Micra K12, Note E11, Almera, Primera, early Qashqai J10, X-Trail T31, Navara D40 — is the classic coded Clarion or Bosch unit. Anything with a NissanConnect touchscreen, which is most J11 Qashqai, Juke F16 and Leaf, is coded to the vehicle instead, so a flat battery gives you a reboot and a clock reset rather than a CODE prompt.
The quick test is simple: if the screen shows the word CODE, dashes, or a keypad after the battery work, it is audio-coded. If it boots to the normal radio screen and just loses your presets and the time, it is not, and no code will be needed no matter what a forum tells you.
Getting the unit out without breaking the dash
Nissan interiors are clip-heavy and the plastics go brittle with age, so the order you work in matters. On a Micra K12 and Note E11 the centre vent surround comes away first, pulled squarely from the top edge with a nylon trim tool; there are no hidden screws in the surround, so if it is not moving you are pulling in the wrong plane. Behind it are four 8mm-headed screws holding the radio cage — undo all four before drawing the unit forward or the cage twists and the CD mechanism jams.
On the Qashqai J10 the strip above the radio containing the hazard switch unclips first, then the surround. Disconnect the battery before you start if the car has a passenger airbag disable switch in that area. Draw the unit out far enough to read the label before unplugging anything — very often the serial is visible with the loom still connected, which saves you re-seating a stiff multiplug.
Photograph the label rather than writing it down. Nissan thermal labels fade, and a P misread as an R or an 8 read as a B is the single most common reason a supplied code is rejected.
What it costs and what the alternatives cost
A Nissan dealer will normally retrieve a code against the serial, and expect to pay somewhere around £20 to £40 for the lookup plus a charge if they remove the unit for you. An auto-electrician doing it as a small job is usually £30 upwards. On this page the retrieval is £19.99, you do the five-minute label read yourself, and if no working code can be supplied you are refunded in full — no code, no charge.
What we will not do is hand you a number generated by a free online calculator. Nissan Clarion and Bosch codes are not derived from a public algorithm the way older Renault pre-codes are, so anything claiming to calculate one instantly from a BP serial is guessing, and three guesses puts the unit into a timed lockout.
If the radio locks you out
LOC or LOCKED means the attempt limit is reached. Leave the ignition in position II with the radio powered and walk away for an hour — the countdown only runs while the unit has power, so switching the car off restarts it. On a car with a tired battery, put a charger on it rather than idling the engine for an hour.
If the code prompt keeps coming back every few days, the radio is not at fault. You have an intermittent permanent live, and the usual suspects are corroded battery terminals, a dry joint in the fusebox behind the glovebox, or a battery that is failing under overnight load. Fix that first, otherwise you will be entering the same code all month.
Do I have to remove my Nissan radio to get the serial? Usually yes. Unlike Ford, most Nissan head units do not display the serial on screen, so the casing label is the reliable source.
Is the Nissan code stored in the car? No. It belongs to the head unit. Nissan dealers often recorded it against the vehicle when new, which is why the handbook wallet is always worth checking.
My Micra looks like it has a Renault radio — which method applies? Later Micras and NV200 vans share Renault-alliance hardware. If the label shows a PRE-CODE line, follow the Renault approach instead of the Clarion one.
What if the label is unreadable? Photograph it in good light at an angle — faded thermal labels often still read under a raking light. If it is genuinely gone, the unit may need specialist reading.
How much does a Nissan radio code cost? £19.99 on this page against your head unit serial, with a full refund if no working code can be supplied. A dealer lookup is typically £20 to £40 plus labour if they remove the unit for you.
Can I get a Nissan radio code from the VIN? Only sometimes, and only for the unit the car left the factory with. On a used Nissan the radio may well have been swapped, so the serial on the fitted unit is the only reliable route.
How long does a Nissan radio code take? Renault-alliance pre-code units are answered instantly. Clarion and Bosch BP/PP serials are retrieved by hand, which in practice means the same working day and usually within a couple of hours during workshop hours.
Is there a free Nissan radio code calculator? Not a genuine one. Free calculators work on older algorithm-based systems such as Renault pre-codes. A Nissan BP or PP serial has to be looked up, so any site generating one instantly is guessing and will lock your unit out.