P2600
Coolant Pump A Control Circuit Open
2003-2003 Mazda B2300 2.3L I4
High SeverityPowertrainGeneric (SAE)
The 2003 Mazda B2300 is equipped with a 2.3L inline-4 engine. Below you'll find detailed p2600 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
Open circuit in the electric auxiliary coolant pump control wiring.
Symptoms
- Engine overheating
- Check engine light
- No cabin heat
- Turbo overheating
Common Causes
- Failed coolant pump
- Broken wiring
- Corroded connector
- Blown fuse
Diagnostic Steps
- Check fuse
- Inspect pump connector
- Measure pump motor resistance
Repair Notes
Replace coolant pump or repair wiring. Check for overheating damage.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P2600 on Other Vehicles
Common Questions
What does code P2600 mean on a 2003-2003 Mazda B2300?
P2600 stands for "Coolant Pump A Control Circuit Open". Open circuit in the electric auxiliary coolant pump control wiring.
What are the symptoms of P2600 on a Mazda B2300?
Common symptoms of P2600 include: Engine overheating, Check engine light, No cabin heat, Turbo overheating.
What causes P2600 on a 2003-2003 Mazda B2300?
Common causes of P2600 include: Failed coolant pump, Broken wiring, Corroded connector, Blown fuse.
Last updated: March 2026