ABS Pressure Circuit Malfunction
2023-2023 Tesla Model 3 Standard Range Single Motor RWD
The 2023 Tesla Model 3 is equipped with a Standard Range Single Motor RWD engine (RWD). Below you'll find detailed c0066 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
General fault in the ABS hydraulic pressure sensing or regulation circuit.
Symptoms
- ABS light on
- Stability control disabled
- Brake pedal feel abnormal
- ABS may activate unexpectedly
Common Causes
- Faulty ABS pressure sensor
- Hydraulic unit internal leak
- Pressure transducer failure
- Wiring to pressure sensor damaged
Diagnostic Steps
- Read ABS pressure sensor values with scan tool
- Compare commanded versus actual pressure
- Inspect pressure sensor wiring
- Check for brake fluid leaks at ABS unit
- Test pressure transducer
Repair Notes
Replace ABS pressure sensor or hydraulic unit as needed.
Related Codes
Other Chassis Codes
- C0021LF Wheel Speed Sensor Range/Performance
- C0022RF Wheel Speed Sensor Range/Performance
- C0023LR Wheel Speed Sensor Range/Performance
- C0024RR Wheel Speed Sensor Range/Performance
- C0025LF Wheel Speed Sensor Circuit Intermittent
- C0026RF Wheel Speed Sensor Circuit Intermittent
- C0027LR Wheel Speed Sensor Circuit Intermittent
- C0028RR Wheel Speed Sensor Circuit Intermittent
- C0035Left Front Wheel Speed Sensor Circuit
- C0036Left Front Wheel Speed Signal Erratic
C0066 on Other Vehicles
Tesla Cybertruck
2024-2024 Cyberbeast Tri Motor AWD
Tesla Cybertruck
2024-2024 Dual Motor AWD
Tesla Cybertruck
2024-2024 Single Motor RWD
Tesla Model 3
2017-2017 Long Range Dual Motor AWD
Tesla Model 3
2017-2017 Performance Dual Motor AWD
Tesla Model 3
2017-2017 Standard Range Plus Single Motor RWD
Tesla Model 3
2018-2018 Long Range Dual Motor AWD
Tesla Model 3
2018-2018 Performance Dual Motor AWD
Common Questions
What does code C0066 mean on a 2023-2023 Tesla Model 3?
C0066 stands for "ABS Pressure Circuit Malfunction". General fault in the ABS hydraulic pressure sensing or regulation circuit.
What are the symptoms of C0066 on a Tesla Model 3?
Common symptoms of C0066 include: ABS light on, Stability control disabled, Brake pedal feel abnormal, ABS may activate unexpectedly.
What causes C0066 on a 2023-2023 Tesla Model 3?
Common causes of C0066 include: Faulty ABS pressure sensor, Hydraulic unit internal leak, Pressure transducer failure, Wiring to pressure sensor damaged.
Last updated: March 2026