P0A61: Drive Motor A Phase V Current Low

What it means

Drive motor A phase V current is below the expected range. The code identifies a low-current condition but does not establish its cause.

At a glance

• Usually lights the check-engine light
• The engine or gearbox may go into limp mode

How it works

Drive motor A phase V is one of the inverter-controlled paths that carries traction-motor current. P0A61 sets when measured current in phase V is below the expected range, pointing to a weak phase path or a current measurement that reads too low.

Common causes

Most likely first.

1. Phase winding partially open
2. Current sensor offset drifted

Symptoms

• EV/hybrid system warning light on
• Reduced motor power or torque
• Possible limp mode or vehicle shutdown

How to diagnose it

1. Record freeze-frame data and compare live phase V current with commanded motor operation and phases U and W to confirm the low reading.
2. With the vehicle made safe under the manufacturer's high-voltage procedure, inspect drive motor A phase V wiring and connectors for damage, looseness, or overheating.
3. Check for related motor or inverter codes and note whether torque loss appears during acceleration, regeneration, or both.
4. Test the phase V current sensor and its wiring under the manufacturer's procedure to check for an offset that biases the reading low.
5. If the sensing circuit passes, have the phase V winding checked for a partial open using the manufacturer's motor diagnostic procedure.

Common fixes

• Secure or repair loose or damaged phase V wiring and connector terminals.
• Replace a phase V current sensor confirmed to have offset drift.
• Repair drive motor A if testing confirms a partially open phase V winding.
• Confirm phase V current tracks commanded operation after repair.

Can I keep driving?

Reduced torque, limp mode, or shutdown may result if the phase V fault worsens. Avoid high-demand driving and stop safely if power drops or hybrid warnings escalate.