LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mazda >> 2000 >> 626 ES, 2.5 D, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics - Introduction >> Self-Diagnostic System >> Diagnostic Trouble Code Identification
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnostic Trouble Code Identification

DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION - 626

DTC DIAGNOSTIC/System Affected
P0102 MASS AIRFLOW (MAF) SENSOR
P0103 MASS AIRFLOW (MAF) SENSOR
P0106 EGR BOOST SENSOR
P0107 EGR BOOST SENSOR
P0108 EGR BOOST SENSOR
P0112 TEMPERATURE SENSOR INPUT LOW (IAT)
P0113 EMPERATURE SENSOR (IAT OR ECT)
P0117 TEMPERATURE SENSOR INPUT LOW (ECT)
P0118 TEMPERATURE SENSOR (IAT OR ECT)
P0122 THROTTLE POSITION (TP) SENSOR LOW INPUT
P0123 THROTTLE POSITION (TP) SENSOR HIGH INPUT
P0125 EXCESSIVE TIME TO ENTER CLOSED LOOP
P0133 HEATED OXYGEN SENSOR (LOW RESPONSE)
P0135 HEATED OXYGEN SENSOR HEATER
P0136 FUEL CONTROL
P1137 FUEL CONTROL
P1138 FUEL CONTROL
P0141 HEATED OXYGEN SENSOR HEATER
P0147 HEATED OXYGEN SENSOR HEATER
P0153 HEATED OXYGEN SENSOR (LOW RESPONSE)
P0155 HEATED OXYGEN SENSOR HEATER
P0142 FUEL CONTROL
P0171 FUEL CONTROL - HO2S NOT SWITCHING
P0172 FUEL CONTROL - HO2S NOT SWITCHING
P0174 FUEL CONTROL - HO2S NOT SWITCHING
P0175 FUEL CONTROL - HO2S NOT SWITCHING
P0230 FUEL PUMP RELAY
P0300 MISFIRE DETECTION MONITOR (RANDOM)
P0301 MISFIRE DETECTION MONITOR (CYL. NO. 1)
P0302 MISFIRE DETECTION MONITOR (CYL. NO. 2)
P0303 MISFIRE DETECTION MONITOR (CYL. NO. 3)
P0304 MISFIRE DETECTION MONITOR (CYL. NO. 4)
P0305 MISFIRE DETECTION MONITOR (CYL. NO. 5)
P0306 MISFIRE DETECTION MONITOR (CYL. NO. 6)
P0320 DISTRIBUTOR IGNITION
P0325 KNOCK SENSOR (KS) CIRCUIT
P0340 CAMSHAFT POSITION (CMP) SENSOR CIRCUIT
P0400 EGR FLOW MALFUNCTION
P0420 CATALYST EFFICIENCY MONITOR & EXHAUST SYSTEMS
P0421 CATALYST EFFICIENCY MONITOR & EXHAUST SYSTEMS
P0442 EVAPORATIVE EMISSION SYSTEM (SMALL LEAK)
P0443 EVAPORATIVE EMISSION SYSTEM
P0446 EVAPORATIVE EMISSION SYSTEM
P0452 EVAPORATIVE EMISSION SYSTEM
P0453 EVAPORATIVE EMISSION SYSTEM
P0455 EVAPORATIVE EMISSION SYSTEM (LARGE LEAK)
P0460 FUEL GAUGE SENDER UNIT
P0500 VEHICLE SPEED SENSOR (VSS)
P0505 IDLE AIR CONTROL (IAC) VALVE
P0603 POWERTRAIN CONTROL MODULE MALFUNCTION
P0605 POWERTRAIN CONTROL MODULE MALFUNCTION
P0703 BRAKE SWITCH MALFUNCTION
P0704 CLUTCH SWITCH INPUT CIRCUIT
P1001 UNABLE TO ACTIVATE SELF-TEST/SCP COMMUNICATION ERROR CODE NOT LISTED
P1100 MASS AIRFLOW (MAF) SENSOR INTERMITTENT
P1101 MASS AIRFLOW (MAF) SENSOR OUT OF RANGE
P1112 TEMPERATURE SENSOR (IAT OR ECT)
P1116 ECT SENSOR
P1117 TEMPERATURE SENSOR (IAT OR ECT)
P1120 THROTTLE POSITION (TP) SENSOR OUT OF RANGE (LOW)
P1121 THROTTLE POSITION (TP) SENSOR
P1124 THROTTLE POSITION (TP) SENSOR OUT OF RANGE
P1125 THROTTLE POSITION (TP) SENSOR
P1127 FUEL CONTROL
P1130 FUEL CONTROL - HO2S NOT SWITCHING
P1131 FUEL CONTROL - HO2S NOT SWITCHING
P1143 FUEL CONTROL
P1144 FUEL CONTROL
P1150 FUEL CONTROL - HO2S NOT SWITCHING
P1151 FUEL CONTROL - HO2S NOT SWITCHING
P1152 FUEL CONTROL - HO2S NOT SWITCHING
P1250 FUEL PRESSURE REGULATOR CONTROL (FPRC) SOLENOID
P1409 EGR VALVE MALFUNCTION
P1410 EGR BOOST SOLENOID VALVE STUCK
P1450 EVAP CONTROL SYSTEM
P1451 CANISTER DRAIN CUT VALVE (CDCV) MALFUNCTION
P1460 WOT A/C CUT-OFF (WAC)
P1460 WOT A/C CUT-OFF (CONTINUOUS MEMORY)
P1464 A/C DEMAND OUT OF RANGE
P1474 FAN CONTROL (FC) RELAY
P1474 FAN CONTROL (FC) RELAY (CONTINUOUS MEMORY)
P1479 FAN CONTROL (FC) RELAY
P1479 FAN CONTROL (FC) RELAY (CONTINUOUS MEMORY)
P1487 EGR BOOST SOLENOID VALVE CIRCUIT
P1501 VEHICLE SPEED SENSOR (VSS)
P1504 IDLE AIR CONTROL (IAC) VALVE
P1506 IDLE AIR CONTROL (IAC) VALVE
P1507 IDLE AIR CONTROL (IAC) VALVE
P1602 IMMOBILIZER UNIT TO PCM COMMUNICATION
P1603 CODE WORD OR KEY ID NUMBER NOT REGISTERED IN PCM
P1604 CODE WORD OR KEY ID NUMBER NOT REGISTERED IN PCM
P1621 CODE WORD OR KEY ID NUMBER NOT REGISTERED IN PCM
P1622 KEY ID NUMBER DOES NOT MATCH
P1623 CODE WORD OR KEY ID NUMBER READ/WRITE ERROR IN PCM
P1624 IMMOBILIZER COMMUNICATION COUNTER = 0
P1650 POWER STEERING PRESSURE (PSP) SWITCH
P1652 POWER STEERING PRESSURE (PSP) SWITCH
P1703 BRAKE SWITCH OUT OF RANGE
P1703 BRAKE SWITCH MALFUNCTION