P2DC4

Starter/Generator Phase Y Current Sensor Circuit Range/Performance

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine light comes on
Hybrid system power reduction
Problems with regenerative braking
Unstable operation of the start-stop system
Possible difficulty starting the engine

Causes

Phase Y current sensor fault
Open or short circuit in the sensor circuit
Poor contact in connectors
Problems with the control unit
Mechanical damage to wiring

How to Fix

Check the integrity of the sensor circuit
Inspect connectors and contacts for corrosion
Test the current sensor with a multimeter
Check the sensor readings using a diagnostic scanner
If necessary, replace the Y phase current sensor

Related codes

P2DC1 P2DC2 P2DC3