Ford - OBD Code Lookup

P1421 Ford

Catalyst Damage

Exhaust Gas Ignition Temperature Sensor

Catalyst Temperature Sensor 1 / 2 Correlation Bank 1

Catalyst Temperature Sensor 1 / 2 Correlation Bank 2

Exhaust Gas Recirculation Sensor ‘B’ Circuit Intermittent/Erratic

Exhaust Gas Recirculation Sensor ‘C’ Circuit Intermittent/Erratic

EGR Position Sensor ‘B’ Minimum/Maximum Stop Performance

Exhaust Gas Recirculation Sensor ‘A’ Circuit Intermittent/Erratic

Secondary Air Injection System Monitor Circuit High Voltage

Secondary Air Injection System Monitor Circuit Low Voltage