Skoda Octavia - Vehicle not starting up | HELLA
Skoda Octavia
All models with 2.0 TDI engine
Engine code BMN
From model year April2006
Vehicle not starting up.
Error code:
P1517 “Main relay fault in circuit”
P2146 “Power supply to injection valve”
If this deficiency is detected in connection with the above error codes, it may be caused by a short-circuit in an injection valve (Fig.1).
This deficiency frequently occurs in vehicles with more than 100,000 km on the clock.
After replacing the defective injection valve you should check that the endstages in the electronic control unit (Fig.2) are functioning correctly and check the injector cable harness (Fig.3) for possible cracks or damaged contacts. To avoid further damage, when an injector valve fails it is advisable to check, and if necessary replace, all the other injector valves that have the same code number, because it can be expected that these may be the next to fail.
Please do this by following the disassembly and reassembly instructions from the vehicle manufacturer.
Fig.3
Fig.1
Fig.2
Important safety note
Technical information and practical tips have been compiled by HELLA in order to provide professional support to vehicle workshops in their day-to-day work. The information provided on this website is intended for use by suitably qualified personnel only.
Reprinting, distribution, reproduction, exploitation in any form or disclosure of the contents of this document, even in part, is prohibited without our express, written approval and indication of the source. The schematic illustrations, pictures and descriptions serve only for the purposes of explanation and representation of the instructions and cannot be used as a basis for installation or assembly work. All rights reserved.
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