Drive Motor Over Temperature
The P0A35 code indicates that the drive motor temperature has exceeded the safe operating threshold. This is typically detected by a temperature sensor inside the motor or inverter. Overheating can be caused by excessive load, cooling system failure, or internal motor faults. If ignored, it may lead to permanent motor damage or reduced performance.
01. Most Common Causes
- Coolant pump failure or low coolant level
- Faulty motor temperature sensor
- Extended high-load operation (e.g., towing, steep grades)
- Blocked or leaking cooling system
02. Symptoms You Will Notice
- Reduced motor power or limp mode
- Warning light on dashboard (e.g., check hybrid system)
- Unusual heat from motor area
- Decreased fuel economy
03. Step-by-Step Diagnosis
Step 1: Scan for additional codes and check freeze frame data.
Step 2: Inspect coolant level and condition; check for leaks.
Step 3: Test coolant pump operation and flow.
Step 4: Measure motor temperature sensor resistance and compare to specs.
Step 5: Check for any obstructions in cooling passages.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
No, driving with an overheated drive motor can cause permanent damage. Stop driving and have the vehicle towed to a repair shop.
How much does it cost to fix?▼
Diagnosis typically costs $50-$150. Repairs vary: coolant pump replacement $200-$400, sensor replacement $100-$200, or more if motor damage occurred.