Engine-Codes - Generic - P0693

P0693 Code - Cooling Fan 2 Control Circuit Low

- Code Popularity: 36,799 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P0693?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Cooling Fan 2 Relay
  • Cooling Fan 2 Relay harness is open or shorted
  • Cooling Fan 2 Relay circuit poor electrical connection
  • Faulty Cooling Fan 1
  • Faulty Engine Control Module (ECM)
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How to Fix the DTC P0693?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P0693 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Radiator fan inoperative
  • Engine Overheating

What Does the P0693 Code Mean?

The Engine Control Module (ECM) grounds the low-speed relay, which is the Fan Low relay, and the high-speed relay, which is the Fan High relay, control circuits through an internal solid-state device called a driver. The primary function of the driver is to supply the ground for the component being controlled. Each driver has a fault line that is monitored by the ECM. When the ECM is commanding a component ON, the voltage potential of the control circuit should be low, near 0 volts. When the ECM is commanding the control circuit to a component OFF, the voltage potential of the circuit should be high, near battery voltage. If the ECM detects that the actual state of the control circuit does not match the expected state, a Diagnostic Trouble Code (DTC) will set.

P0693 Code - Cooling Fan 2 Control Circuit Low

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