Parking Brake Applied Fail
The P1536 code indicates that the powertrain control module (PCM) has detected a malfunction in the parking brake applied circuit. This typically occurs when the parking brake switch or its wiring fails, causing the PCM to receive an incorrect signal that the parking brake is applied when it is not, or vice versa. This can affect vehicle operation, such as preventing the transmission from shifting out of park or triggering warning lights.
1. Symptoms You Will Notice
- Parking brake warning light stays on
- Transmission may not shift out of park
- Brake system warning light illuminated
- Vehicle may not start or move
2. Most Common Causes
- Faulty parking brake switch
- Damaged wiring or connector in the parking brake circuit
- Corrosion or poor ground connection
- Faulty PCM (rare)
3. Step-by-Step Diagnosis
Step 1: Use an OBD2 scanner to confirm the code and check for other related codes.
Step 2: Visually inspect the parking brake switch and wiring for damage or corrosion.
Step 3: Test the parking brake switch continuity with a multimeter; replace if faulty.
Step 4: Check for proper ground and voltage at the switch connector.
Step 5: If all else is fine, test the PCM for proper signal reception.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
No, it is not safe. The code can cause the transmission to lock in park or the parking brake to engage unexpectedly, leading to a potential accident.
How much does it cost to fix?▼
The typical repair cost ranges from $50 to $150, including parts (switch) and labor. Diagnostic fees may apply.
5. Commonly Affected Makes
This is a manufacturer-specific code. The exact manufacturer is not confirmed in our current database.