P0695: Fan 3 Control Circuit Low
The P0695 code indicates that the Powertrain Control Module (PCM) has detected a low voltage condition in the control circuit for Fan 3 (typically the auxiliary cooling fan). This can be caused by a short to ground, a faulty fan relay, a damaged wiring harness, or a failed fan motor. The PCM monitors the fan control circuit for proper voltage; when the voltage drops below a specified threshold, this code is set.
1. Most Common Causes
- Short to ground in Fan 3 control circuit
- Faulty Fan 3 relay
- Damaged wiring or connector
- Failed Fan 3 motor
2. Symptoms You Will Notice
- Engine overheating
- Check Engine Light illuminated
- Cooling fan not operating when commanded
- Air conditioning performance issues
3. Step-by-Step Diagnosis
Step 1: Scan for other codes and note freeze frame data.
Step 2: Visually inspect Fan 3 wiring and connector for damage or corrosion.
Step 3: Test Fan 3 relay and control circuit voltage with a multimeter.
Step 4: Check Fan 3 motor resistance and operation by applying battery voltage directly.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive with this code as it can lead to engine overheating and potential damage, especially in stop-and-go traffic or hot weather.
How much does it cost to fix?▼
The cost to fix P0695 typically ranges from $50 to $150 for parts and labor, depending on the root cause (relay, wiring, or fan motor replacement).
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.