P0692: Fan 1 Control Circuit High
The P0692 code indicates a high voltage condition in the Fan 1 control circuit. This circuit typically controls the engine cooling fan relay or the fan itself. When the Powertrain Control Module (PCM) detects a voltage higher than expected (e.g., above 4.5V) on the control circuit, it sets this code. Common causes include a short to voltage in the wiring, a faulty fan relay, a defective cooling fan motor, or a PCM issue. This can lead to the fan running continuously or not at all, causing potential overheating.
01. Most Common Causes
- Short to voltage in the fan control circuit wiring
- Faulty cooling fan relay
- Defective cooling fan motor
- Failed PCM (rare)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Engine overheating or running hotter than normal
- Cooling fan running continuously or not at all
- Poor air conditioning performance
03. Step-by-Step Diagnosis
Step 1: Use a scan tool to confirm the code and check for related codes.
Step 2: Visually inspect the fan control circuit wiring and connectors for damage, corrosion, or shorts.
Step 3: Test the fan relay and fan motor operation using a multimeter and jumper wires.
Step 4: Check for voltage at the PCM connector; if voltage is high, repair the short to voltage.
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 the cooling fan to malfunction, leading to engine overheating and potential damage.
How much does it cost to fix?▼
The cost to fix P0692 typically ranges from $50 to $150, depending on the cause. Replacing a relay or repairing wiring is usually inexpensive, while a fan motor replacement may cost more.