Update: 2/22/11
I originally thought that Mode 3 could report any of the DTCs listed below. This is incorrect. The list below is actually the complete list of all DTCs the ECU can generate, but only some of the DTCs in the list are associated with Mode 3 (see my Mode 7 post for the list). The other DTCs are associated with other modes. More on these later.
OBD Mode 3 is used to return Diagnostic Trouble Codes (DTCs). It does not support any PIDs - a mode 3 request only consists of the mode (other than the 3 header bytes and final checksum byte). If any DTCs are active, the DTCs are returned as two-byte binary-coded-decimal numbers, in groups of three DTCs at a time.
I'm still trying to understand the details of how the code works that determines which DTCs are set and when, but for this post I'll just list the possible DTCs this ECU can report. I'll post more details on OBD Mode 3 at a later time.
All possible DTCs (see http://www.obd-codes.com/trouble_codes/ for details)
P0010 - "A" Camshaft Position Actuator Circuit (Bank 1)
P0011 - "A" Camshaft Position - Timing Over-Advanced or System Performance (Bank 1)
P0012 - "A" Camshaft Position - Timing Over-Retarded (Bank 1)
P0031 - HO2S Heater Control Circuit Low (Bank 1 Sensor 1)
P0032 - HO2S Heater Control Circuit High (Bank 1 Sensor 1)
P0037 - HO2S Heater Control Circuit Low (Bank 1 Sensor 2)
P0038 - HO2S Heater Control Circuit High (Bank 1 Sensor 2)
P0101 - Mass Air Flow Circuit Range/Performance Problem
P0102 - Mass Air Flow Circuit Low Input
P0103 - Mass Air Flow Circuit High Input
P0106 - Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance Problem
P0107 - Manifold Absolute Pressure/Barometric Pressure Circuit Low Input
P0108 - Manifold Absolute Pressure/Barometric Pressure Circuit High Input
P0111 - Intake Air Temperature Circuit Range/Performance Problem
P0112 - Intake Air Temperature Circuit Low Input
P0113 - Intake Air Temperature Circuit High Input
P0116 - Engine Coolant Temperature Circuit Range/Performance Problem
P0117 - Engine Coolant Temperature Circuit Low Input
P0118 - Engine Coolant Temperature Circuit High Input
P0121 - Throttle Position Sensor/Switch A Circuit Range/Performance Problem
P0122 - Throttle Position Sensor/Switch A Circuit Low Input
P0123 - Throttle Position Sensor/Switch A Circuit High Input
P0125 - Insufficient Coolant Temperature for Closed Loop Fuel Control
P0126 - Insufficient Coolant Temperature for Stable Operation
P0128 - Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)
P0131 - 02 Sensor Circuit Low Voltage (Bank I Sensor I)
P0132 - 02 Sensor Circuit High Voltage (Bank I Sensor 1)
P0133 - 02 Sensor Circuit Slow Response (Bank 1 Sensor 1)
P0134 - 02 Sensor Circuit No Activity Detected (Bank I Sensor 1)
P0138 - 02 Sensor Circuit High Voltage (Bank I Sensor 2)
P0140 - 02 Sensor Circuit No Activity Detected (Bank 1 Sensor 2)
P0171 - System too Lean (Bank 1)
P0172 - System too Rich (Bank 1)
P0222 - Throttle/Petal Position Sensor/Switch B Circuit Low Input
P0223 - Throttle/Petal Position Sensor/Switch B Circuit High Input
P0300 - Random/Multiple Cylinder Misfire Detected
P0301 - Cylinder 1 Misfire Detected
P0302 - Cylinder 2 Misfire Detected
P0303 - Cylinder 3 Misfire Detected
P0304 - Cylinder 4 Misfire Detected
P0327 - Knock Sensor 1 Circuit Low Input (Bank I or Single Sensor)
P0328 - Knock Sensor 1 Circuit High Input (Bank I or Single Sensor)
P0335 - Crankshaft Position Sensor A Circuit Malfunction
P0340 - Camshaft Position Sensor Circuit Malfunction
P0401 - Exhaust Gas Recirculation Flow Insufficient Detected
P0402 - Exhaust Gas Recirculation Flow Excessive Detected
P0420 - Catalyst System Efficiency Below Threshold (Bank 1)
P0421 - Warm Up Catalyst Efficiency Below Threshold (Bank 1)
P0442 - Evaporative Emission Control System Leak Detected (small leak)
P0443 - Evaporative Emission Control System Purge Control Valve Circuit
P0451 - Evaporative Emission Control System Pressure Sensor Range/Performance
P0452 - Evaporative Emission Control System Pressure Sensor Low Input
P0453 - Evaporative Emission Control System Pressure Sensor High Input
P0455 - Evaporative Emission Control System Leak Detected (gross leak)
P0461 - Fuel Level Sensor Circuit Range/Performance
P0462 - Fuel Level Sensor Circuit Low Input
P0463 - Fuel Level Sensor Circuit High Input
P0464 - Fuel Level Sensor Circuit Intermittent
P0480 - Cooling Fan I Control Circuit Malfunction
P0500 - Vehicle Speed Sensor Malfunction
P0505 - Idle Control System Malfunction
P0506 - Idle Control System duty cycle Lower Than Expected
P0507 - Idle Control System duty cycle Higher Than Expected
P0550 - Power Steering Pressure Sensor Circuit Malfunction
P0605 - Internal Control Module Read Only Memory (ROM) Error
P0703 - Torque Converter/Brake Switch B Circuit Malfunction
P0704 - Clutch Switch Input Circuit Malfunction
P0705 - Transmission Range Sensor Circuit malfunction (PRNDL Input)
P0706 - Transmission Range Sensor Circuit Range/Performance
P0715 - Input/Turbine Speed Sensor Circuit Malfunction
P0720 - Output Speed Sensor Circuit Malfunction
P0725 - Engine Speed input Circuit Malfunction
P0741 - Torque Converter Clutch Circuit Performance or Stuck Off
P0742 - Torque Converter Clutch Circuit Stuck On
P0743 - Torque Converter Clutch Circuit Electrical
P0751 - Shift Solenoid A Performance or Stuck Off
P0752 - Shift Solenoid A Stuck On
P0753 - Shift Solenoid A Electrical
P0756 - Shift Solenoid B Performance or Stock Off
P0757 - Shift Solenoid B Stuck On
P0758 - Shift Solenoid B Electrical
P0850 - Neutral switch input circuit problem http://foxed.ca/rx7manual/2003mazdarx8/esicont/en/srvc/html/BHE010200800W01.html)
P1449 - Evaporative Check Solenoid Circuit (http://www.aboutautomobile.com/DTC/P1449)
P1450 - Unable to Bleed Up Fuel Tank Vacuum (this and the rest can be found at aboutautomobile.com)
P1487 - Exhaust Gas Recirculation Check Solenoid Circuit
P1496 - EGR Stepper Motor 1 Control Circuit Low/High
P1497 - EGR Stepper Motor 2 Control Circuit Low/High
P1498 - EGR Stepper Motor 3 Control Circuit Low/High
P1499 - EGR Stepper Motor 4 Control Circuit Low/High
P1512 - Intake Manifold Runner Control Circuit (IMRC) Bank 1 stuck closed
P1518 - IMRC stuck open
P1562 - PCM backup + terminal voltage low
P1569 - IMRC circuit malfunction
P1570 - IMRC circuit malfunction
P1601 - ECM/TCM Serial Communication Error
P1602 - Immobilizer/ECM Communication Error
P1603 - ID Number Unregistered
P1604 - Code word Unregistered
P1608 - PCM Internal Circuit
P1621 - Immobilizer Code Words Do Not Match
P1622 - Immobilizer ID Does Not Match
P1623 - Immobilizer Code Word/ID Number Write Failure
P1624 -Vehicle anti-theft system malfunction
P1631 - Alternator Regulator #2 Control Circuit
P1633 - Generator Control System - over charge
P1634 - Generator Control System - no charge
I'm interested in analyzing the code behind the immobilizer-related DTCs. I'll take a look and maybe post what I find next time.
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