Adaptive Cruise Control Sensor Alignment
2000-2012 Mitsubishi Eclipse 2.4L I4
Description
The adaptive cruise control distance sensor is out of calibrated alignment.
Symptoms
- ACC unavailable message
- ACC warning light
- Cruise control not functioning
- Forward collision warning inactive
Common Causes
- Sensor misaligned after collision
- Sensor bracket bent
- Windshield replacement shifted sensor
- Front fascia repair changed sensor aim
Diagnostic Steps
- Perform ACC sensor alignment procedure
- Check sensor mounting bracket
- Inspect front fascia for damage or misalignment
- Verify sensor aim with manufacturer target and procedure
- Check for windshield-related codes if camera-based
Repair Notes
Perform ACC sensor alignment using manufacturer-specified targets and procedure.
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
C0400 on Other Vehicles
Mitsubishi Colt JP
2002-2012 1.3L I4 4A90
Mitsubishi Colt JP
2002-2012 1.5L I4 4A91
Mitsubishi Delica D:5
2019-2025 2.2L I4 Turbo Diesel 4N14
Mitsubishi Eclipse
2006-2012 2.4L I4
Mitsubishi Eclipse
2006-2012 3.8L V6
Mitsubishi Eclipse Cross
2018-2024 1.5L I4 Turbo
Mitsubishi Eclipse Cross
2018-2024 1.5L Turbo I4
Mitsubishi Eclipse Cross PHEV
2022-2024 2.4L I4 PHEV
Common Questions
What does code C0400 mean on a 2000-2012 Mitsubishi Eclipse?
C0400 stands for "Adaptive Cruise Control Sensor Alignment". The adaptive cruise control distance sensor is out of calibrated alignment.
What are the symptoms of C0400 on a Mitsubishi Eclipse?
Common symptoms of C0400 include: ACC unavailable message, ACC warning light, Cruise control not functioning, Forward collision warning inactive.
What causes C0400 on a 2000-2012 Mitsubishi Eclipse?
Common causes of C0400 include: Sensor misaligned after collision, Sensor bracket bent, Windshield replacement shifted sensor, Front fascia repair changed sensor aim.