Fuses and relays Skoda Octavia A5, 2004 - 2013

Most of the power circuits of the Czech station wagon and liftback are protected by fuses. Fan motors, fuel pump and other powerful current consumers are connected via relays.


Protective elements are installed in mounting blocks, which are located in the engine compartment and the passenger compartment. The information on the diagrams is relevant for the Skoda Octavia A5 models of 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013.

In the engine compartment


To access the engine compartment block, slide the latches to unlock the fuse box cover and remove the fuse box cover by lifting it up.

Diagram
No. A Decoding
1 - Reserve
2 5 Steering column switches
3 5 Diagnostic connector
4 30 Hydroelectronic module ABS
5 15 Automatic gearbox control unit
6 5 Instrument cluster
7 - Reserve
8 15 Audio system
9 5 Telephone
10 5 Engine control unit relay supply
11 20 Additional heater and ventilation control unit
12 5 Data bus control unit
13 15 The engine control unit
14 20 Ignition
15 5, 15 Oxygen concentration sensor, fuel pump relay, glow plug relay
16 30 ABS control unit
17 15 Sound signal
18 30 Sound amplifier
19 30 Windshield wipers
20 - Reserve
21 15 Oxygen concentration sensor
22 5 Clutch / Brake Pedal Switch
23 5,
10,
15
  • Additional air pump,
  • Injection pump,
  • mass air flow sensor
24 10 EGR valve
25 30 Right headlight
26 30 Left headlight
27 40 Additional air pump, preheating
28 40 Starter
29 50 Terminal supply 30
30 50 Clamp X *
R1 - Radiator fan motor relay
R2 - Automatic gearbox control relay

Blocks in the passenger compartment


To gain access to the main cabin fuse box, carefully pry off the cover with a screwdriver ( 1 ) and remove it ( 2 ).

Assigment of fuses in the passenger compartment main box
No. A Description
1 10 Diagnostic connector, engine control unit, fuel pump
2 5 Control unit ABS, ESP
3 5 Airbags
4 5 Heater, air conditioner, reversing light
5 5 Electro-corrector of headlights
6 5 Instrument cluster, automatic transmission control unit, electric power steering control unit, parking assistance
7 - Reserve
8 - Reserve
9 - Reserve
10 - Reserve
11 - Reserve
12 10 Central locking control unit
13 10 External lighting control unit, brake lights
14 5 Automatic gearbox control unit, gear selector lock
15 7.5 Interior lighting control unit
16 10 Climate control system
17 - Optional equipment
18 5 Parking aid sensors
19 5 Trailer hitch control unit
20 5 Hill Start Assist
21 - Reserve
22 40 Climate control fan
23 30 Front window lifter
24 25 Cigarette lighter fuse Skoda Octavia A5
25 25,
30
Heated rear window. Additional heater
26 20 Trunk socket
27 15
  • Fuel pump relay,
  • fuel injectors
28 - Optional equipment
29 10 The engine control unit
30 20 Automatic gearbox control unit
31 20 Brake vacuum pump
32 30 Rear door windows
33 25 Electric sunroof
34 20 Comfort function control unit
35 5 Anti-theft system
36 20 Headlight washers
37 20 Heated front seats
38 30 Heated rear seat
39 - Reserve
40 40 Heating fan
41 15 Tailgate window wiper
42 15 Windscreen washer
43 15 Trailer coupling
44 20 Trailer coupling
45 15 Trailer coupling
46 5 Heated washer jets
47 5 Additional heater relay
48 - Reserve
49 5 Central light switch


An add-on board with relay modules is located under the steering wheel.

Relay circuits (Type 1)
Top board
No. Description
D1 Relay for an independent heater (for models with an independent auxiliary heater)
or
Relay for low heating capacity (for models with an additional resistive heater (PTC)
D2.1 Horn
D2.2 Fuel pump relay (for BUD, CGGA, BSE, BSF, CMXA, CHGA engines) /  Additional fuel pump relay -J832- (for CLCA, CLCB, CFHF, CFHC, CEGA engines)
D3 Relay for high heat output (for models with additional resistive heater (PTC))
D3.1 Fresh air blower (for models with independent auxiliary heater)
D3.2 Additional heater fuel pump relay -J749- (on models with independent additional heater)
D4 Starter
D5.1 Farrowers
D5.2 relay for heating element (at engine lettering CAYC)
Bottom board
No. Description
1 supply voltage relay (15) 
2 rear window defogger relay
3 supply voltage relay (50)
starter relay 1
4
  • fuel pump relay (creating pressure in the power supply system) - (for the engine BUD, CGGA, BSE, BSF, CMXA, CHGA)
  • fuel pump relay (for diesel engines)
5 switching relay for contact X
Relay circuit (Type 2)
B4 supply voltage (30)
B5 heated rear window
B6 horn
B7 glass washer pump 1
B8 glass washer pump 2
B9 switching relay for X contact
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