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Home >> Mazda >> 2002 >> 626 ES, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics - 2.5L >> Diagnostic Trouble Code Definitions
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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 Description
P0068 (1) TP Sensor Inconsistent With MAF Sensor
P0102 (1) MAF Sensor Circuit Low Input
P0103 (1) MAF Sensor Circuit High Input
P0106 (1) BARO Sensor Circuit Performance Problem
P0107 (1) BARO Sensor Circuit Low Input
P0108 (1) BARO Sensor Circuit High Input
P0112 (1) IAT Sensor Circuit Low Input
P0113 (1) IAT Sensor Circuit High Input
P0116 (1) ECT Sensor Circuit Performance Problem
P0117 (1) ECT Sensor Circuit Low Input
P0118 (1) ECT Sensor Circuit High Input
P0122 (1) TP Sensor Low Input
P0123 (1) TP Sensor High Input
P0125 (1) Excessive Time To Enter Closed Loop Fuel Control
P0133 (1) Right Front HO2S Circuit Slow Response
P0135 (1) Right Front HO2S Heater Circuit Malfunction
P0136 (1) Right Rear HO2S Circuit Malfunction
P0141 (1) Right Rear HO2S Heater Circuit Malfunction
P0153 (1) Left Front HO2S Circuit, Slow Response
P0155 (1) Left Front HO2S Heater Circuit Malfunction
P0156 (1) Left Rear HO2S Circuit Malfunction
P0161 (1) Left Rear HO2S Heater Circuit Malfunction
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
P0230  Fuel Pump Primary Circuit Malfunction
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
P0316 (2) Misfire During First 1000 Revs After Start-Up
P0320 (1) CKP Sensor Circuit Malfunction
P0325 (1) KS Circuit Malfunction
P0340 (1) CMP Sensor Circuit Malfunction
P0400 (1) EGR Flow Malfunction
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
P0442 (1) EVAP Control System Small Leak
P0443 (1) EVAP Control System Purge Control Valve Circuit Malfunction
P0446 (1) EVAP Control System Vent Control Malfunction
P0452 (1) EVAP Control System Fuel Tank Pressure Sensor Low Input
P0453 (1) EVAP Control System Fuel Tank Pressure Sensor High Input
P0455 (1) EVAP Control System Large Leak Detected
P0460 (1) Fuel Gauge Sender Unit Circuit Malfunction
P0461 (1) Fuel Gauge Sender Unit Circuit Performance Problem
P0480 (3) Cooling Fan Control Circuit Malfunction
P0481 (3) Condenser Fan Control Circuit Malfunction
P0500 (1) VSS Circuit Malfunction
P0505  IAC System Malfunction
P0506 (1) Idle Control System RPM Less Than Expected
P0507 (1) Idle Control System RPM Greater Than Expected
P0511 (1) IAC Valve Circuit Malfunction
P0603  PCM Keep Alive Memory (KAM) Test Error
P0605  PCM Read Only Memory (ROM) Test Error
P0703  Brake Switch Input Malfunction
P0704 (1)(4) Clutch Switch Input Circuit Malfunction
P0705 (5) Automatic Transmission
P0706 (5) Automatic Transmission
P0710 (5) Automatic Transmission
P0711 (5) Automatic Transmission
P0715 (5) Automatic Transmission
P0731 (5) Automatic Transmission
P0732 (5) Automatic Transmission
P0733 (5) Automatic Transmission
P0734 (5) Automatic Transmission
P0740 (5) Automatic Transmission
P0743 (5) Automatic Transmission
P0745 (5) Automatic Transmission
P0750 (5) Automatic Transmission
P0755 (5) Automatic Transmission
P0760 (5) Automatic Transmission
P0850 (1) Neutral Switch Input Circuit Malfunction
P1001  Data Link Connector (DLC) Malfunction
P1100  MAF Sensor Intermittent Malfunction
P1101  MAF Sensor Out Of Self-Test Range
P1112  IAT Sensor Intermittent Malfunction
P1116  ECT Sensor Out Of Self-Test Range
P1117  ECT Sensor Intermittent Malfunction
P1120 (1) TP Sensor Out Of Range (Low)
P1124  TP Sensor Out Of Self-Test Range
P1125  TP Sensor Intermittent Problem
P1127  Exhaust Not Warm Enough
P1130 (1) Right Front HO2S Not Switching (Adaptive Fuel Limit)
P1131 (1) Right Front HO2S Not Switching (Sensor Indicates Lean)
P1132 (1) Right Front HO2S Not Switching (Sensor Indicates Rich)
P1137  Right Rear HO2S Not Switching (Sensor Indicates Lean)
P1138  Right Rear HO2S Not Switching (Sensor Indicates Rich)
P1150 (1) Left Front HO2S Not Switching (Adaptive Fuel At Limit)
P1151 (1) Left Front HO2S Not Switching (Sensor Indicates Lean)
P1152 (1) Left Front HO2S Not Switching (Sensor Indicates Rich)
P1157  Left Rear HO2S Switching (Sensor Indicates Lean)
P1158  Left Rear HO2S Switching (Sensor Indicates Rich)
P1250 (3) Fuel Pressure Regulator Control (PRC) Solenoid Valve Circuit Malfunction
P1410  EGR Boost Sensor Solenoid Valve Stuck
P1450 (1) EVAP Control System Malfunction (Excessive Vacuum)
P1451 (1) Canister Drain Cut Valve (CDCV) Circuit Malfunction
P1460 (3) WOT A/C Control Circuit Malfunction
P1464 (3) A/C Demand Out Of Self-Test Range
P1487 (3) EGR Boost Sensor Solenoid Valve Circuit Malfunction
P1501 (3) VSS Out Of Self-Test Range
P1521 (1) VRIS Solenoid Valve No. 1 Circuit Malfunction
P1522 (1) VRIS Solenoid Valve No. 2 Circuit Malfunction
P1602 (3) Immobilizer Unit-PCM Communication Error
P1603 (3) Code Word Not Registered In PCM
P1604 (3) Key ID Number Not Registered In PCM
P1621 (3) Code Word Does Not Match After Engine Cranking
P1622 (3) Key ID Number Does Not Match
P1623 (3) Code Word Or Key ID Number, Read/Write Error In PCM
P1624 (3) Immobilizer System Communication Counter = Zero
P1633 (1) PCM Keep Alive Memory (KAM) Voltage Low
P1650 (3) PSP Switch Out Of Self-Test Range
P1652 (1) PSP Switch Failed On
P1703 (5) Brake Switch Out Of Self-Test Range
P1705 (5) Automatic Transmission
P1765 (5) Automatic Transmission
P1780 (5) Automatic Transmission
(1) Malfunction Indicator Light (MIL) illuminates.
(2) Malfunction Indicator Light (MIL) flashes or stays on.
(3) Malfunction Indicator Light (MIL) is not activated.
(4) Manual transmission only.
(5) See appropriate DIAGNOSIS article in AUTOMATIC TRANSMISSIONS.