Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer thinks the temperature sensor for one of the electric motors is reading too high, like a thermometer showing it's really hot when it shouldn't be.
The P0A33 code is triggered when the Powertrain Control Module (PCM) detects a high voltage signal from the drive motor B temperature sensor, indicating a potential issue with the sensor or its circuit.
The Drive Motor B Temperature Sensor measures the temperature of the motor to ensure it operates within safe limits. A 'circuit high' condition suggests that the sensor is sending a higher voltage signal than expected, which could be due to a fault in the sensor, wiring, or connectors.
• Check Engine Light is on
• Reduced vehicle performance
• Possible overheating of the drive motor
• Increased energy consumption
• Faulty drive motor B temperature sensor
• Open or shorted wiring in the sensor circuit
• Poor electrical connection at the sensor
• Malfunctioning PCM
PCM: Powertrain Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the drive motor B temperature sensor for proper operation.
• Check the PCM for faults.
• Replace the drive motor B temperature sensor if faulty.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the PCM if necessary.
• OBD-II scanner
• Multimeter
• Wire repair tools
$150 - $400
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regularly inspect and maintain vehicle wiring.
• Ensure connectors are clean and secure.
• Monitor motor temperature readings periodically.
Sensor Issue
• Avoid driving aggressively until the issue is resolved.
• Monitor vehicle performance for any changes.
Check if the vehicle's powertrain warranty covers sensor repairs.
This code has been more common in hybrid and electric vehicles due to their reliance on electric drive motors.
Moderate – Address the issue soon to prevent potential motor damage.
Driving with this issue may lead to reduced performance and efficiency. Address promptly to ensure safe operation.
• Vehicle at operating temperature
• Sensor and wiring accessible for inspection
The drive motor B temperature sensor is typically located near the drive motor assembly.
Q: Can I drive with a P0A33 code?
A: It's best to address the issue soon, as driving with this code may affect vehicle performance and efficiency.
Q: How do I reset the P0A33 code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue persists, the code may return.
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