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2015 JEEP CHEROKEE
3.2L V6•AWD•AUTOMATIC•gas
11 active safety recalls on this vehicle — view recalls
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Repairs0Labor987Torque6853Fluid17DTC2320Battery2Maintenance0Recalls11
C0420high severityChassis

Pre-Collision System Malfunction

on 2015 Jeep Cherokee 3.2L V6 · AWD

What this code means

General fault in the pre-collision system that prepares or initiates emergency braking.

Symptoms

  • Pre-collision system warning light
  • Automatic emergency braking disabled
  • Forward collision alert unavailable
  • Driver assist systems degraded

Common causes

  • Radar or camera sensor fault
  • Control module failure
  • Brake system fault preventing intervention
  • CAN communication error between modules

Diagnostic steps

  1. Check for radar and camera codes first
  2. Verify brake system is fully operational
  3. Test CAN communication between PCS modules
  4. Check all sensor alignments
  5. Inspect wiring to PCS components

Repair notes

Diagnose root sensor or communication fault. PCS depends on multiple subsystems.

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🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Mechanic · 20+ years. Spot an error? Use the Help link above — a human reads every report.
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