Malfunction and Remedies
Park heating (optional)
432 / 476
Error code
number/num-
ber of flash
pulses
error info Possible causes Remedy
Metering pump fault Check function of metering pump,
replace if necessary
Wiring Check wiring for damage, gaps and
short-circuit
Combustion air fan blocking
protection
Check function of combustion air
fan, replace if necessary
8 Combustion air fan
fault
Combustion air fan fault Replace combustion air fan
Wiring Check wiring for damage, gaps and
short-circuit
9 Glow plug fault
Glow plug fault Check function of glow plug, replace
if necessary
Check coolant level, bleed coolant
circuit
Heater overheats
Check function of circulation pump
Check wiring for damage, gaps and
short-circuit
Coolant temperature sensor
fault
Check function of coolant tempera-
ture sensor, replace if necessary
Check wiring for damage, gaps and
short-circuit
10 Overheating
Overheating protection fault
Check function of overheating pro-
tection, replace if necessary
Wiring Check wiring for damage, gaps and
short-circuit
11 Circulation pump
fault
Circulation pump fault Replace circulation pump
12 Short circuit in bat-
tery circuit breaker
or electronic battery
switch
Wiring Check wiring for damage, gaps and
short-circuit
Wiring Check wiring for damage, gaps and
short-circuit
Check wiring for damage, gaps and
short-circuit
13 Vehicle fan outlet
short-circuit
Vehicle fan relay
Check function of vehicle fan relay,
replace if necessary
14 Overheating protec-
tion fault
Wiring Check wiring for damage, gaps and
short-circuit
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