Electric Motor A — Position Sensor Circuit Malfunction
The Motor Control Unit (MCU) detected an out-of-range or erratic signal from the Electric Motor A resolver or Hall-effect position sensor, impairing torque control accuracy.
Estimated Cost
$300 – $2,500
Repair Time
2–5 hours
DIY Difficulty
Professional Recommended
Can I Fix This Myself?
Professional Service Recommended
This repair involves high-voltage components or specialized equipment.
What professionals will use:
Use the diagnostic wizard below to gather information for your mechanic, then find a local EV specialist using the ad below.
Check Your Warranty Before Paying
Federal law requires EV battery warranty coverage for 8 years / 100,000 miles minimum. Many manufacturers offer 10-year coverage. An authorized dealership can confirm coverage for your VIN at no charge.
Local EV Specialists Near You
SoCal EV Service Center
Toyota Hybrid · GM Bolt · Ford EV Diagnostics
San Diego, CA
More local specialists
Pacific Coast Tesla & EV
San Diego, CA · 4.7★
Step-by-Step Diagnostic Wizard
Answer each question to narrow down the root cause of your P0C73 fault.
Check for Physical Damage
Step 1 of ~5
Inspect the undercarriage near the front left motor (Motor A). Look for impact damage, bent wiring harness, or signs the vehicle has been off-road with significant rock strikes.
Is there visible physical damage or wiring harness disturbance near the front motor?
Need hands-on help?
Find a verified EV mechanic or dealership near you.