P0693 moderate

Cooling Fan 2 Control Circuit Low

The P0693 code means the vehicle's onboard diagnostic system has detected: Cooling Fan 2 Control Circuit Low. This is a moderate severity code.

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Keep driving?: Short distances only
DIY difficulty: moderate
Estimated cost: $50 - $500 (parts and labor)

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Common Symptoms

Check Engine Light on
Fan 2 runs at max or not at all
Reduced system performance
Warning indicators on dashboard

Probable Causes (Ranked by Likelihood)

Short to ground in fan 2 control circuit Very High
Wiring damage or corrosion in the circuit High
Poor electrical connection at module or component Moderate
ECM or control module internal failure Low

Step-by-Step Diagnostic Procedure

Use a scan tool to read data related to Cooling Fan 2 Control
Inspect all related wiring, connectors, and grounds for damage, corrosion, or loose connections
Measure circuit voltage, resistance, and continuity to identify the fault type
Check for technical service bulletins related to this code for your specific vehicle

Frequently Asked Questions

What is cooling fan 2?

Some vehicles have multiple cooling fans. Fan 2 is typically an auxiliary fan for the AC condenser. Each fan has its own control circuit.

Can P0693 cause overheating?

If fan 2 is not operating properly, cooling capacity is reduced. This may cause overheating during idle, low-speed driving, or when the AC is running, especially in hot weather.

Should I replace the fan motor or the relay?

Start with the relay as it is less expensive and easier to replace. If the relay tests good, check wiring for shorts. The fan motor is typically the last component to test.