P2601high severityPowertrain
Coolant Pump A Control Circuit Range/Performance
on 2003 Mazda B2300 2.3L I4 · FWD
What this code means
The electric coolant pump is not performing as expected.
Symptoms
- Intermittent overheating
- Check engine light
- Reduced cabin heat
Common causes
- Weak pump motor
- Partial blockage
- Control module fault
- Low coolant
Diagnostic steps
- Verify coolant level
- Monitor pump current draw
- Check for blockage
Repair notes
Check coolant level first. Replace pump if current draw abnormal.
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