P0696

Symptoms

• Check Engine Light
• The third fan runs constantly
• Increased energy consumption
• Noise of the third fan when the engine is cold
• Accelerated wear of the third fan motor

Causes

• Short circuit of the control wire to power (+12 V)
• Open circuit in control circuit ground
• Third fan relay fault
• Damage to wiring or connectors
• Internal ECU fault

How to Fix

1. Read OBD-II codes
2. Check the operation of the third fan when the engine is cold
3. Measure the voltage in the third fan control circuit
4. Check the relay and its connector
5. Check the control wire for short to power
6. If the circuit is working properly - ECU diagnostics

Related codes

Error P0696 by Vehicle Brand