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Code

P0691

Cooling

Relais ventilateur 1 — circuit bas

Le circuit du relais du ventilateur lit trop bas.

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Most likely causes

Relais défectueux
Câblage

Symptoms you may notice

Fan runs constantly or never
Overheating in traffic

Checks to run

Test the relay
Check wiring
Verify fan operation

Tools you may need

Multimeter

Always diagnose before replacing. Codes share symptoms; confirm the cause with measurements before buying parts.

Related codes in Cooling

Thermostat sous la température de régulation

Défaut circuit capteur de température du liquide

Température insuffisante pour la boucle fermée

Défaut circuit relais ventilateur 1

Température liquide — signal bas

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