Powertrain, generic (extended)

P2E22 Drive Motor A Phase Y Current Sensor Circuit High

Check engine lightOn

EmissionsRelevant

Drive cycleNot required

Limp modePossible

P2E22 is stored when the phase Y current sensor signal of drive motor A sticks above its upper limit. No manufacturer documents P2E22 publicly. On GM's 2016 Cadillac ELR the U/V/W counterparts fail above 800 A, judged as 4 bad samples out of 6 at 10.4 ms intervals, Type A. Notably, the V-phase checks only run while no U-phase sensor code is active, and W waits for V in the same way, presumably so that one shared fault does not set a code on every phase. If P2E22 shows up together with high codes of X or Z, look for such a common cause first, for example the sensor reference. On its own, a short between signal and supply line, or a lost sensor ground, is the likely culprit; real overcurrent in phase Y is P2C6E. Mitsubishi Electric's two-group motor patent lists a dedicated Y sensor beside those for X and Z. Low side: P2E21.

Likely causes

Phase Y signal shorted to the sensor supply

Open ground of the phase Y sensor

Shared sensor reference faulty, other phases affected too

Symptoms

Hybrid warning lamp and MIL
Electric drive switched off or strongly limited
High codes of other phases stored at the same time

Repair estimate

DifficultyShop_onlyWorkshop job

Parts and labour€200–5,000

Time1–6 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

drive motor a phase y current sensorwiring harnesshybrid control module

References: gsi.ext.gm.com, image-ppubs.uspto.gov.