Diagnostic Trouble Code Definitions

CAUTION: DO NOT crank engine before replacement PCM is programed to immobilizer system or PCM will be severely damaged. If test procedures require replacement of PCM on a vehicle equipped with immobilizer system, vehicle must be sent to authorized Mazda dealer to have replacement PCM programed.

NOTE: Vehicle with immobilizer system can be identified by a solid urethane ignition key head.

DIAGNOSTIC TROUBLE CODE DEFINITIONS

DTC

System Affected

P0011 ⁽¹⁾

CMP Timing (Right Side) - Over-Advanced

P0012 ⁽¹⁾

CMP Timing (Right Side) - Over-Retarded

P0021 ⁽¹⁾

CMP Timing (Left Side) - Over-Advanced

P0022 ⁽¹⁾

CMP Timing (Left Side) - Over-Retarded

P0031 ⁽¹⁾

HO2S Heater (Right Front) Circuit - Low Input

P0032 ⁽¹⁾

HO2S Heater (Right Front) Circuit - High Input

P0037 ⁽¹⁾

HO2S Heater (Right Rear) Circuit - Low Input

P0038 ⁽¹⁾

HO2S Heater (Right Rear) Circuit - High Input

P0051 ⁽¹⁾

Left Front HO2S Heater Circuit - Low Input

P0052 ⁽¹⁾

Left Front HO2S Heater Circuit - High Input

P0057 ⁽¹⁾

Left Rear HO2S Heater Circuit - Low Input

P0058 ⁽¹⁾

Left Rear HO2S Heater Circuit - High Input

P0101 ⁽¹⁾

Mass Airflow/Intake Air Temperature Sensor Inconsistent With Throttle Position Sensor

P0102 ⁽¹⁾

Mass Airflow Circuit - Low Input

P0103 ⁽¹⁾

Mass Airflow Circuit - High Input

P0111 ⁽¹⁾

Intake Air Temperature Circuit Performance Problem

P0112 ⁽¹⁾

Intake Air Temperature Circuit - Low Input

P0113 ⁽¹⁾

Intake Air Temperature Circuit - High Input

P0117 ⁽¹⁾

Engine Coolant Temperature Circuit - Low Input

P0118 ⁽¹⁾

Engine Coolant Temperature Circuit - High Input

P0122 ⁽¹⁾

Throttle Position Sensor No. 1 - Low Input

P0123 ⁽¹⁾

Throttle Position Sensor No. 1 - High Input

P0125 ⁽¹⁾

Excessive Time To Enter Closed Loop Fuel Control

P0126 ⁽¹⁾

Coolant Thermostat - Stuck Open

P0128 ⁽¹⁾

Coolant Thermostat - Stuck Open

P0131 ⁽¹⁾

Right Front HO2S No Inversion - Stuck Low

P0132 ⁽¹⁾

Right Front HO2S No Inversion - Stuck High

P0133 ⁽¹⁾

Right Front HO2S Circuit - Malfunction

P0134 ⁽¹⁾

Right Front HO2S Circuit - No Activity Detected

P0138 ⁽¹⁾

Right Rear HO2S Circuit - High Input

P0140 ⁽¹⁾

Right Rear HO2S Circuit - No Activity Detected

P0151 ⁽¹⁾

Left Front HO2S No Inversion - Stuck Low

P0152 ⁽¹⁾

Left Front HO2S No Inversion - Stuck High

P0153 ⁽¹⁾

Left Front HO2S Circuit - Malfunction

P0154 ⁽¹⁾

Left Front HO2S Circuit - No Activity Detected

P0158 ⁽¹⁾

Left Rear HO2S Circuit - High Input

P0160 ⁽¹⁾

Left Rear HO2S Circuit - No Activity Detected

P0171 ⁽¹⁾

Right Side Fuel Trim System - Too Lean

P0172 ⁽¹⁾

Right Side Fuel Trim System - Too Rich

P0174 ⁽¹⁾

Left Side Fuel Trim System - Too Lean

P0175 ⁽¹⁾

Left Side Fuel Trim System - Too Rich

P0222 ⁽¹⁾

Throttle Position Sensor No. 2 Circuit - Low Input

P0223 ⁽¹⁾

Throttle Position Sensor No. 2 Circuit - High Input

P0300 ⁽²⁾

Random Misfire Detected

P0301 ⁽²⁾

Cylinder No. 1 Misfire Detected

P0302 ⁽²⁾

Cylinder No. 2 Misfire Detected

P0303 ⁽²⁾

Cylinder No. 3 Misfire Detected

P0304 ⁽²⁾

Cylinder No. 4 Misfire Detected

P0305 ⁽²⁾

Cylinder No. 5 Misfire Detected

P0306 ⁽²⁾

Cylinder No. 6 Misfire Detected

P0325 ⁽¹⁾

Knock Sensor Circuit - Malfunction

P0335 ⁽¹⁾

Crankshaft Position Sensor Circuit - Malfunction

P0340 ⁽¹⁾

Right Side Camshaft Position Sensor Circuit - Malfunction

P0345 ⁽¹⁾

Left Side Camshaft Position Sensor Circuit - Malfunction

P0401 ⁽¹⁾

EGR Flow - Insufficient Detected

P0402 ⁽¹⁾

EGR Flow - Excessive Detected

P0403 ⁽¹⁾

EGR Valve Control Circuit - Malfunction

P0421 ⁽¹⁾

Right Side Warm-Up Catalyst System Efficiency Below Threshold

P0431 ⁽¹⁾

Left Side Warm-Up Catalyst System Efficiency Below Threshold

P0441 ⁽¹⁾

EVAP Control System - Incorrect Purge Flow

P0442 ⁽¹⁾

EVAP Control System Small Leak

P0443 ⁽¹⁾

Evaporative Emission Control System Purge Solenoid Valve Circuit - Malfunction

P0446 ⁽¹⁾

Change Over Valve (EVAP System Leak Detection Pump) Stuck Closed

P0455 ⁽¹⁾

EVAP Control System - Large Leak Detected

P0456 ⁽¹⁾

EVAP Control System - Very Small Leak Detected

P0461 ⁽¹⁾

Fuel Gauge Sender Unit Circuit Range/Performance Problem

P0462 ⁽¹⁾

Fuel Gauge Sender Unit Circuit - Low Input

P0463 ⁽¹⁾

Fuel Gauge Sender Unit Circuit - High Input

P0480 ⁽³⁾

Fan Control Circuit - Malfunction

P0500 ⁽¹⁾

Vehicle Speed Sensor Circuit - Malfunction

P0505

Idle Control System - Malfunction

P0506 ⁽¹⁾

Idle Control System RPM - Less Than Expected

P0507 ⁽¹⁾

Idle Control System RPM - More Than Expected

P0550 ⁽¹⁾

Power Steering Pressure Switch Circuit - Malfunction

P0564 ⁽³⁾

Cruise Control Switch Circuit - Malfunction

P0571

Brake Switch Circuit - Malfunction

P0602 ⁽¹⁾

Power Control Module Programming Error

P0606 ⁽³⁾

Engine Control Module/Power Control Module Processor

P0610 ⁽¹⁾

Control Module - Vehicle Options Error

P0703 ⁽¹⁾

Brake Switch No. 1 - Input Malfunction

P0704 ⁽¹⁾⁽⁴⁾

Clutch Switch - Input Malfunction

P0705 ⁽⁵⁾

Transaxle Range Switch Circuit - Malfunction (Short Circuit To Power)

P0706 ⁽⁵⁾

Transaxle Range Switch Circuit - Malfunction (Open/Short Circuit To Ground

P0711 ⁽⁵⁾

Transaxle Fluid Temperature Sensor Circuit - Malfunction (Stuck)

P0712 ⁽⁵⁾

Transaxle Fluid Temperature Sensor Circuit - Malfunction (Short Circuit)

P0713 ⁽⁵⁾

Transaxle Fluid Temperature Sensor Circuit - Malfunction (Open Circuit)

P0715 ⁽⁵⁾

Input/Turbine Speed Sensor Circuit - Malfunction

P0720 ⁽⁵⁾

Vehicle Speed Sensor Circuit - Malfunction

P0740 ⁽⁵⁾

Torque Converter Clutch System - Malfunction

P0743 ⁽⁵⁾

Torque Converter Clutch Solenoid Valve Circuit - Malfunction

P0745 ⁽⁵⁾

Pressure Control Solenoid Circuit - Malfunction

P0751 ⁽⁵⁾

Shift Solenoid "A" - Malfunction (Stuck Off)

P0752 ⁽⁵⁾

Shift Solenoid "A" - Malfunction (Stuck On)

P0753 ⁽⁵⁾

Shift Solenoid "A" - Malfunction (Open/Short Circuit)

P0756 ⁽⁵⁾

Shift Solenoid "B" - Malfunction (Stuck Off)

P0757 ⁽⁵⁾

Shift Solenoid "B" - Malfunction (Stuck On)

P0758 ⁽⁵⁾

Shift Solenoid "B" - Malfunction (Open/Short Circuit)

P0761 ⁽⁵⁾

Shift Solenoid "C" - Malfunction (Stuck Off)

P0762 ⁽⁵⁾

Shift Solenoid "C" - Malfunction (Stuck On)

P0763 ⁽⁵⁾

Shift Solenoid "C" - Malfunction (Open/Short Circuit)

P0768 ⁽⁵⁾

Reduction Timing Solenoid Valve Circuit - Malfunction (Open/Short Circuit)

P0850 ⁽¹⁾

Neutral Switch - Input Malfunction

P1309 ⁽¹⁾

PCM Integrated Circuit For Misfire Detection

P1410 ⁽³⁾

PCM Integrated Circuit For Misfire Detection

P1487 ⁽¹⁾

EGR Boost Sensor Solenoid Valve Circuit - Malfunction

P1562 ⁽¹⁾

PCM Positive Back-Up Battery Voltage - Low Input

P1710 ⁽⁵⁾

GND Return Circuit - Malfunction

P2088 ⁽¹⁾

Right Oil Control Valve Actuator Circuit - Low Input

P2089 ⁽¹⁾

Right Oil Control Valve Actuator Circuit - High Input

P2092 ⁽¹⁾

Left Oil Control Valve Actuator Circuit - Low Input

P2093 ⁽¹⁾

Left Oil Control Valve Actuator Circuit - High Input

P2100 ⁽¹⁾

Throttle Actuator Control Motor Circuit/Open

P2101 ⁽¹⁾

Throttle Actuator Control Motor Circuit Range/Performance

P2105 ⁽³⁾

Throttle Actuator Control System - Forced Engine Shutdown

P2107 ⁽¹⁾

Throttle Actuator Control Module Processor

P2110 ⁽¹⁾

Throttle Actuator Control System - Forced Limited RPM

P2111 ⁽¹⁾

Throttle Actuator Control System - Stuck Open

P2112 ⁽¹⁾

Throttle Actuator Control System - Stuck Closed

P2119 ⁽¹⁾

Throttle Actuator Control Throttle Body Range/Performance

P2122 ⁽¹⁾

Accelerator Pedal Position Sensor No. 1 Circuit - Low Input

P2123 ⁽¹⁾

Accelerator Pedal Position Sensor No. 1 Circuit - High Input

P2127 ⁽¹⁾

Accelerator Pedal Position Sensor No. 2 Circuit - Low Input

P2128 ⁽¹⁾

Accelerator Pedal Position Sensor No. 2 Circuit - High Input

P2135 ⁽¹⁾

Throttle Position Sensor No. 1/No. 2 - Voltage Correlation

P2138 ⁽¹⁾

Accelerator Pedal Position Sensor No. 1/No. 2 - Voltage Correlation

P2227 ⁽¹⁾

EGR Boost Sensor Circuit - Performance Problem

P2228 ⁽¹⁾

EGR Boost Sensor Circuit - Low Input

P2229 ⁽¹⁾

EGR Boost Sensor Circuit - High Input

P2401 ⁽¹⁾

EVAP System Leak Detection Pump Control Circuit - Low Input

P2402 ⁽¹⁾

EVAP System Leak Detection Pump Control Circuit - High Input

P2404 ⁽¹⁾

EVAP System Leak Detection Pump Sense Circuit - Malfunction

P2405 ⁽¹⁾

EVAP System Leak Detection Pump Sense Circuit - Low Input

P2406 ⁽¹⁾

EVAP System Leak Detection Pump Sense Circuit - High Input

P2407 ⁽¹⁾

EVAP System Leak Detection Pump Sense Circuit - Intermittent

P2502 ⁽³⁾

Generator Terminal "B" Circuit Open

P2503 ⁽³⁾

Generator Output Voltage Signal - No Electricity

P2504 ⁽³⁾

Battery - Overcharge

U0073

CAN System - Communication Error

U0100

TCM Cannot Receive Any Signals From PCM

U0121

Communication Error to ABS/TCS HU/CM

U0155

Communication Error To Instrument Cluster

U1900

CAN System Communication Error

U2516

CAN System Wiring Harness Open Or Short

⁽¹⁾	Malfunction Indicator Light (MIL) illuminates.

⁽²⁾	Malfunction Indicator Light (MIL) flashes or stays on.

⁽³⁾	Malfunction Indicator Light (MIL) does not illuminate.

⁽⁴⁾	Manual transmission only.

⁽⁵⁾	See appropriate DIAGNOSIS article in AUTOMATIC TRANSMISSIONS.