P2626
O2 Sensor Pumping Current Trim Circuit Open Bank 1 Sensor 1
2002-2002 Mazda B2300 2.3L I4
Moderate SeverityPowertrainGeneric (SAE)
The 2002 Mazda B2300 is equipped with a 2.3L inline-4 engine. Below you'll find detailed p2626 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
Open circuit in the wideband O2 sensor trim circuit on bank 1.
Symptoms
- Check engine light
- Poor fuel economy
- Rough running
Common Causes
- Failed wideband O2 sensor
- Wiring damage
- ECM circuit fault
Diagnostic Steps
- Check sensor connector
- Measure sensor heater and signal circuits
- Inspect wiring
Repair Notes
Replace wideband O2 sensor. Verify wiring.
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
P2626 on Other Vehicles
Common Questions
What does code P2626 mean on a 2002-2002 Mazda B2300?
P2626 stands for "O2 Sensor Pumping Current Trim Circuit Open Bank 1 Sensor 1". Open circuit in the wideband O2 sensor trim circuit on bank 1.
What are the symptoms of P2626 on a Mazda B2300?
Common symptoms of P2626 include: Check engine light, Poor fuel economy, Rough running.
What causes P2626 on a 2002-2002 Mazda B2300?
Common causes of P2626 include: Failed wideband O2 sensor, Wiring damage, ECM circuit fault.
Last updated: March 2026