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P3422

Charge Port Proximity Detection Circuit Fault

2012-2017 Buick Regal 2.4L I4 Hybrid

Moderate SeverityPowertrainGeneric (SAE)

Description

The proximity detection circuit that detects when a charging connector is inserted is malfunctioning. This circuit uses a pilot signal to communicate with the EVSE.

Symptoms

  • Vehicle does not detect charger connected
  • Charge session will not initiate
  • Intermittent charge recognition
  • EVSE shows no vehicle detected
  • Dashboard shows not connected despite plugged in

Common Causes

  • Proximity pilot circuit damaged
  • Charge port connector pin damage
  • EVSE pilot wire fault
  • Charge port control module failure
  • Water intrusion affecting pilot signal

Diagnostic Steps

  1. Test pilot signal voltage levels at charge port
  2. Inspect charge port pins for damage or corrosion
  3. Test with different EVSE equipment
  4. Measure proximity resistor values
  5. Check charge port control module operation

Repair Notes

Replace charge port assembly or repair pilot circuit. Inspect connector pins for damage.

Related Codes

P3420Charge Port Inlet Temperature Sensor FaultP3421Charge Port Locking Actuator Malfunction

Other Powertrain Codes

P3422 on Other Vehicles

Common Questions

What does code P3422 mean on a 2012-2017 Buick Regal?

P3422 stands for "Charge Port Proximity Detection Circuit Fault". The proximity detection circuit that detects when a charging connector is inserted is malfunctioning. This circuit uses a pilot signal to communicate with the EVSE.

What are the symptoms of P3422 on a Buick Regal?

Common symptoms of P3422 include: Vehicle does not detect charger connected, Charge session will not initiate, Intermittent charge recognition, EVSE shows no vehicle detected, Dashboard shows not connected despite plugged in.

What causes P3422 on a 2012-2017 Buick Regal?

Common causes of P3422 include: Proximity pilot circuit damaged, Charge port connector pin damage, EVSE pilot wire fault, Charge port control module failure, Water intrusion affecting pilot signal.

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