P2C48: Coolant Pump C Control Circuit Performance/Stuck Off

Coolant pump C is commanded on but does not respond as expected. Pump motor stuck, relay weld, or driver fault.

Medium severity. Can I keep driving?Watch the temperature gauge. If it climbs or a warning appears, stop the car in a safe place and turn off the engine: overheating can cause serious damage.

Most likely causes

Pump motor mechanically stuck
Output driver fault
Carbon or debris buildup preventing free movement

What to check, in order

Start with the simplest. You can tick off each step.

With the engine cold, check the coolant level; never do this when the system is hot
Compare the reading with other engine data while varying the engine speed.
Check the actual temperature in live data
Make sure the fan comes on when it should
Check the thermostat and connector
Measure the sensor and replace it if its readings do not make sense

Good to know

Repair difficulty: medium
It can trigger limp mode.

What each character of P2C48 means

P: Powertrain: engine and transmission
2: Generic code: same on every make
C: Subsystem depends on the code range
48: Specific fault in that system

Frequently asked questions

Can I keep driving with code P2C48?

Watch the temperature gauge. If it climbs or a warning appears, stop the car in a safe place and turn off the engine: overheating can cause serious damage.

What causes code P2C48?

The most common causes are: pump motor mechanically stuck; output driver fault; carbon or debris buildup preventing free movement.

Related codes

Sources

Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.