P0696: Fan 3 Control Circuit High
The P0696 code indicates that the Powertrain Control Module (PCM) has detected a high voltage condition in the control circuit for cooling fan 3. This typically means the circuit voltage is above the expected range, often due to a short to power, a faulty fan relay, or a defective fan motor. The PCM monitors the fan control circuit for proper voltage levels; when it sees excessive voltage, it sets this code. This can lead to the fan running continuously or not at all, affecting engine cooling.
01. Most Common Causes
- Short to power in the fan 3 control circuit
- Faulty fan 3 relay
- Defective fan 3 motor
- Damaged wiring or connector
- Failed PCM (rare)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Engine overheating
- Cooling fan running continuously
- Cooling fan not operating at all
- Reduced air conditioning performance
03. Step-by-Step Diagnosis
Step 1: Scan for codes and verify P0696 is present. Check for other related codes.
Step 2: Visually inspect the fan 3 wiring and connector for damage, corrosion, or shorts.
Step 3: Test the fan 3 relay and control circuit voltage using a multimeter. Compare with manufacturer specs.
Step 4: Check the fan 3 motor by applying direct battery power and ground to see if it operates.
Step 5: If all components test OK, suspect a PCM issue and perform further diagnostics or reprogramming.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive with this code, as it can cause engine overheating and potential damage. Have the issue diagnosed and repaired promptly.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for parts and labor, depending on the root cause. Replacing a relay or fan motor is usually affordable.