The second-generation Peugeot 308 (platform T9) has two separately documented electrical distributions: Full (Version 1) and Eco (Version 2). Peugeot’s 2014-2015 and 2016-2018 handbooks also list different accessible circuits. This guide translates all 81 original source entries in 10 tables, including the extra AdBlue/automatic-transmission fuse box. Do not use the first-generation T7 diagrams or assume that Full/Eco fuse numbers are interchangeable.
Where are the Peugeot 308 T9 fuse boxes?
Dashboard: With the ignition off, locate the service cover in the lower left section of the dashboard. Peugeot specifies releasing the upper-left edge of the cover first, followed by the right edge. On right-hand-drive cars, confirm the exact service opening in the handbook for the vehicle. The fuse extractor is stored with the original service equipment. Fuse numbers and the physical carrier differ between Full and Eco installations.
Under the bonnet: Open the bonnet and locate the covered electrical distribution unit next to the battery. Unclip the cover to inspect the fitted positions and close it carefully to maintain its water seal. On the later Full system the manufacturer lists two distinct engine groups: box 1 for normal services and box 2 for the AdBlue and automatic gearbox circuits. Position F12 in box 1 is not the same socket as F12 in box 2.
Identifying Full and Eco configurations
Do not select a diagram solely from a registration year. A 2014-2015 Full 308 has cabin F15 15 A for the accessory socket and F16 15 A for the lighter; the Eco alternative uses F14 10 A and F13 10 A instead. Later Full uses F13 for the front and F14 for the boot power outlet; later Eco has F15 for its 12 V outlet and F16 for the lighter. The 2016-2018 Full horn is on engine F22, whereas the Eco horn is on cabin F26. Compare the numbers on the physical carrier before diagnosis.
Frequently requested fuse positions
The following index repeats seven common circuits rather than adding seven physical fuses. Short identifiers in the first column describe the type of consumer. The third column gives all four year-and-equipment combinations, including missing or unused listings.
| Pozycja | Amperaż [A] | Chroniony obwód / funkcja |
|---|---|---|
| LIG | Varies | Cigarette lighter: 2014-2015 Full F16 15 A, Eco F13 10 A; 2016-2018 Eco F16 15 A, no separate fuse listed for Full |
| 12V | Varies | Front 12 V outlet: 2014-2015 Full F15 15 A, Eco F14 10 A; 2016-2018 Full F13 10 A, Eco F15 15 A |
| BOOT | Varies | Boot 12 V power outlet: only 2016-2018 Full lists a dedicated F14 10 A; no separate allocation in other owner tables |
| AUDIO | Varies | Audio and multimedia: early Full F17 15 A plus F18 20 A; early Eco F6 A/B and F28 A/B 15 A each. Later Full uses F6 A/B and F28 A/B 15 A; later Eco F17 15 A plus F18 20 A |
| WIP | Varies | Front windscreen wipers: engine Full F19 30 A, Eco F29 30 A in both year ranges |
| HORN | Varies | Horn: engine Full F22 15 A. The later Eco puts the horn on dashboard F26 15 A; the 2014-2015 Eco reference does not list a horn fuse separately |
| UREA | Varies | Diesel AdBlue: 2016-2018 Full engine box 2 F8 30 A; later Eco engine F28 30 A. Not separately listed in the 2014-2015 reference |
2014-2015 cabin – Version 1 Full
The original 2014 handbook lists four user-accessible positions for Full: F15 15 A for the 12 V socket, F16 15 A for the lighter, F17 15 A for audio and F18 20 A for permanent battery power to the audio system. The large original diagram shows the correct Full carrier.
| Pozycja | Amperaż [A] | Chroniony obwód / funkcja |
|---|---|---|
| F15 | 15 | 12 V accessory outlet |
| F16 | 15 | Cigarette lighter power socket |
| F17 | 15 | Radio and audio system |
| F18 | 20 | Permanent battery power to radio/audio |
2014-2015 cabin – Version 2 Eco
The Eco fascia has its own numbering. F13 10 A protects the lighter, F14 10 A the 12 V socket, and F6 A/B plus F28 A/B 15 A each supply the audio system. A/B are alternate manufacturer positions according to the fitted fuse carrier, not instructions to install both simultaneously.
| Pozycja | Amperaż [A] | Chroniony obwód / funkcja |
|---|---|---|
| F6 A/B | 15 | Radio / audio system on either factory A or B circuit |
| F13 | 10 | Cigarette lighter |
| F14 | 10 | 12 V accessory power outlet |
| F28 A/B | 15 | Permanent battery feed to radio on A or B factory position |
2014-2015 engine compartment – Full
F19 30 A is the front windscreen wiper motor; F20 15 A is the front/rear wash pump; F21 20 A protects optional headlamp washing. F22 15 A supplies the horn and F23/F24 15 A each protect the separate right/left high-beam lamps. This drawing is retained with the exact Full version table.
| Pozycja | Amperaż [A] | Chroniony obwód / funkcja |
|---|---|---|
| F19 | 30 | Front windscreen wiper motor |
| F20 | 15 | Front and rear screenwash pumps |
| F21 | 20 | Headlamp washer pump if installed |
| F22 | 15 | Horn |
| F23 | 15 | Right-hand main beam |
| F24 | 15 | Left-hand main beam |
2014-2015 engine compartment – Eco
The Eco engine supply instead lists front fog lights at F16 15 A, right and left high beams at F18/F19 10 A, wipers at F29 30 A and optional headlamp-wash relay at F25 40 A. F30 is an 80 A high-current protection for equipment such as diesel glow plugs, auxiliary programmable heating and headlamp washers. No separately verified 2014 Eco engine schematic accompanies the Polish source, so a later-year drawing has not been relabelled as an early one.
| Pozycja | Amperaż [A] | Chroniony obwód / funkcja |
|---|---|---|
| F16 | 15 | Front fog lamps |
| F18 | 10 | Right-hand main beam |
| F19 | 10 | Left-hand main beam |
| F25 | 40 | Headlamp washer relay on factory-approved retrofit |
| F29 | 30 | Front windscreen wiper motor |
| F30 | 80 | Diesel glow plugs, optional programmable heater or headlamp washer pump, depending on installed equipment |
2016-2018 dashboard – Full
The later Full passenger chart has 19 listed locations. F13 10 A is the front 12 V socket, F14 10 A the boot socket, F30 20 A the rear wiper, F31 30 A the door locks and F32 10 A the Hi-Fi amplifier. Emergency/assistance calling, keyless access and starting, seats, sensors, airbags and multimedia all have separately identified circuits.
| Pozycja | Amperaż [A] | Chroniony obwód / funkcja |
|---|---|---|
| F4 | 5 | Emergency and assistance call module |
| F6 A/B | 15 | Radio, touchscreen, CD player and navigation (A or B factory socket) |
| F11 | 5 | Keyless entry and engine starting |
| F13 | 10 | Front 12 V power socket |
| F14 | 10 | Luggage-compartment 12 V socket |
| F16 | 3 | Glovebox and rear courtesy lighting |
| F17 | 3 | Vanity mirror and front courtesy lighting |
| F19 | 5 | Instrument cluster |
| F21 | 10 | Multifunction display and air-conditioning |
| F22 | 5 | Reversing camera and parking sensors |
| F24 | 3 | Rain and sunlight sensor |
| F25 | 5 | Airbag controller |
| F28 A/B | 15 | Permanent battery supply to audio on factory A or B fuse |
| F30 | 20 | Rear windscreen wiper |
| F31 | 30 | Central locking and deadlocking |
| F32 | 10 | Hi-Fi sound amplifier |
| F33 | 3 | Electric driver seat memory |
| F34 | 5 | Electric power steering |
| F35 | 3 | Seat-belt warning display |
2016-2018 dashboard – Eco
For this Eco arrangement F15 15 A powers the accessory socket and F16 15 A the lighter. F26 15 A is the horn located in the dashboard rather than the engine box. F22/F24 30 A serve locking circuits; F25/F27 15 A serve the washer pumps; F30 15 A operates the rear wiper. Paired manufacturer labels are preserved as the source records them.
| Pozycja | Amperaż [A] | Chroniony obwód / funkcja |
|---|---|---|
| F9 | 5 | Alarm, emergency and assistance calls |
| F13 | 5 | Reversing camera and parking sensors |
| F15 | 15 | 12 V accessory outlet |
| F16 | 15 | Cigarette lighter |
| F17 | 15 | Radio and audio |
| F18 | 20 | Touchscreen, CD player, audio and navigation |
| F19 | 5 | Rain and sunlight sensor |
| F20 | 5 | Airbags |
| F21 | 5 | Instrument cluster |
| F22 / F24 | 30 | Front/rear inner and outer door locking circuits |
| F23 | 5 | Glovebox, vanity mirror and front/rear courtesy lights |
| F25 / F27 | 15 | Front/rear washer pump circuits |
| F26 | 15 | Horn – located in the CABIN for this Eco version |
| F30 | 15 | Rear windscreen wiper |
2016-2018 under-bonnet Full – two fuse groups
Box 1 includes F12 5 A for Park Assist, F14 25 A and F20 15 A for washing equipment, F19 30 A for front wipers, F21 20 A for headlamp washers and F22 15 A for the horn. Box 2 has a separately designated F8 30 A for the BlueHDi AdBlue system and F10 5 A/F12 15 A for automatic gearbox circuits. These are not interchangeable sockets within one fuse carrier.
Full engine fuse box 1
| Pozycja | Amperaż [A] | Chroniony obwód / funkcja |
|---|---|---|
| F12 | 5 | Park Assist ECU |
| F14 | 25 | Windscreen/rear-screen washer pump |
| F15 | 5 | Electric power steering ECU |
| F19 | 30 | Front windscreen wiper motor |
| F20 | 15 | Front/rear washer pump motors |
| F21 | 20 | Headlamp washers |
| F22 | 15 | Horn |
| F23 | 15 | Right main beam |
| F24 | 15 | Left main beam |
Full engine fuse box 2 – AdBlue and automatic gearbox
| Pozycja | Amperaż [A] | Chroniony obwód / funkcja |
|---|---|---|
| F8 | 30 | Diesel exhaust emission control – AdBlue selective catalytic reduction |
| F10 | 5 | Automatic gearbox first electrical supply |
| F12 | 15 | Automatic gearbox second electrical supply |
2016-2018 engine compartment – Eco
In the later Eco unit F28 30 A protects the diesel AdBlue emissions system. F29 30 A supplies the front wiper motor and F30 80 A covers diesel glow plugs or optional auxiliary heating. Other BSI feeds and individual headlamp protections are listed below. The horn is separately protected at cabin F26 in this version.
| Pozycja | Amperaż [A] | Chroniony obwód / funkcja |
|---|---|---|
| F13 | 5 | Built-in systems interface (BSI) module |
| F16 | 15 | Front fog lamps |
| F18 | 10 | Right main beam |
| F19 | 10 | Left main beam |
| F25 | 40 | Headlamp washer relay on optional retrofit |
| F27 | 25 | Built-in systems interface (BSI) additional feed |
| F28 | 30 | Diesel AdBlue emissions system |
| F29 | 30 | Front windscreen wiper motor |
| F30 | 80 | Diesel glow plugs, optional programmable heater or headlamp washer pump |
Common electrical faults: sockets, wipers, horn and AdBlue
12 V outlet or lighter has no power: First identify Full/Eco and the correct year group. An early Full lighter uses F16 15 A but an early Eco lighter uses F13 10 A. In 2016-2018 Eco the lighter is F16 again. Inspect the socket for coins or damaged contacts before inserting a replacement.
Luggage-compartment outlet dead: On the 2016-2018 Full layout, check cabin F14 10 A. Horn does not sound: Full uses engine F22 15 A; later Eco uses cabin F26 15 A. Front wiper failure: Full engine F19 30 A, Eco engine F29 30 A. If a correct fuse is healthy, test motor, switch, grounds and associated connectors.
AdBlue or SCR warning: Later BlueHDi Full has engine box 2 F8 30 A; later Eco has engine F28 30 A. A good fuse cannot rule out dosing pump, sensors and emissions-system faults. Do not bypass SCR equipment or install a higher-value fuse.
Other Peugeot fuse-box generations
The preceding Peugeot 308 I T7 has different dashboard, engine and battery links. For older PSA systems see Peugeot 307 and Peugeot 407, but never transfer fuse assignments between models.
Technical references: Peugeot 308 T9 official owner handbooks for 2014 and 2016, Full/Eco cabin and engine charts, with 2016 Full engine box 2 and optional BlueHDi systems.