P0CC2

What it means

P0CC2 is a generic powertrain code for hybrid and electric vehicles. It means the control unit has found the drive motor 'A' coolant pump control circuit is operating outside its expected range or performance. The control unit compares the commanded pump output with feedback such as speed, current or diagnostic signals, and sets the code when they do not agree. The exact monitoring method varies by model.

Symptoms

• Warning lamp or hybrid/EV system fault message on the dashboard
• Reduced power or limited performance (limp mode) on some models
• Drive motor or inverter overheating warnings
• Coolant pump noise, or no sound from the pump when it should be running
• Reduced electric drive, or the engine running more than usual on a hybrid
• Cooling fan running constantly or at high speed

Possible causes

• Coolant pump for the drive motor circuit worn, seized or failing internallylikely
• Wiring damage, corrosion or poor connections in the pump power, ground or control circuitlikely
• Low coolant level or air trapped in the drive motor/inverter cooling circuit, causing poor pump performancepossible
• Blocked or restricted coolant passages, hoses or radiator in the electric drive cooling looppossible
• Low system voltage or a weak 12 V supply affecting pump operationpossible
• Fault in the control unit or inverter driver that controls the pumprare
• Outdated control unit software where the manufacturer has issued a fix for pump controlrare

How to diagnose

1. Read all stored codes and freeze frame data, noting temperatures, vehicle speed and system voltage when the code set, and check for related cooling or voltage codes.
2. Check the coolant level and condition in the drive motor/inverter cooling circuit, following the manufacturer's procedure for that model, and look for leaks.
3. Visually inspect the pump wiring, connector and fuses or relays for damage, corrosion, water ingress or heat marks.
4. Check the 12 V battery condition and charging system, as low voltage can upset pump control.
5. Listen and feel for the pump running when commanded, and use the scan tool's active test if the model supports it.
6. Measure the supply, ground and control signal at the pump connector against the manufacturer's data.
7. Check hoses, radiator and coolant flow for restrictions or trapped air, and bleed the system using the correct procedure.
8. Check for software updates or technical bulletins for the model before condemning a control unit.

How to fix

• Replace the drive motor coolant pump if it is faulty, using the correct specification for the vehicle.
• Repair or replace damaged wiring, connectors, fuses or relays in the pump circuit.
• Top up or replace coolant with the correct type and bleed the system fully.
• Clear blockages or replace restricted hoses and cooling components.
• Repair the 12 V battery or charging fault, then recheck pump operation.
• Update the control unit software if the manufacturer lists it as a fix, or repair the controller if it is proven faulty.

Can I keep driving?

Nearby codes

• P0CC1GenericDrive Motor A Coolant Pump Control Circuit/Open
• P0CC3GenericDrive Motor A Coolant Pump Control Circuit Low