Charge Port Proximity Detection Circuit Fault
2012-2017 Buick Regal 2.4L I4 Hybrid
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
- Test pilot signal voltage levels at charge port
- Inspect charge port pins for damage or corrosion
- Test with different EVSE equipment
- Measure proximity resistor values
- Check charge port control module operation
Repair Notes
Replace charge port assembly or repair pilot circuit. Inspect connector pins for damage.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
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.