Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2004 Mazda MPV ESFACTORY OEM SERVICE PROCEDURE
On-Board Diagnostic [Engine Control System AJ]
- Control System Wiring Diagram
- Monitoring System And Control System Device Relationship Chart
- Foreword
- OBD-II Pending Trouble Codes
- OBD-II Freeze Frame Data
- OBD-II On Board System Readiness Test
- OBD-II Diagnostic Monitoring Test Results
- OBD-II Read/Clear Diagnostic Test Results
- OBD-II Parameter Identification (PID) Access
- On-Board Diagnostic Test
- After Repair Procedure
- OBD-II Drive Mode
- Notes
- Mode 1 (PCM Adaptive Memory Produce Drive Mode)
- Mode 2 (EGR System Repair Verification Drive Mode)
- Mode 3 (HO2S heater, HO2S, and TWC Repair Verification Drive Mode)
- Mode 6 (EVAP System Repair Verification Drive Mode)
- Single Drive (PCM Adaptive Memory Produce, EGR System Repair Verification, HO2S heater, HO2S TWC, and EVAP System Verification Drive Mode)
- Diagnostic Monitoring Test Results
- Diagnostic Trouble Code Index
- DTC Table
- DTC P0031: Ho2S Heater (Front, RH) Circuit Low
- DTC P0032: Ho2S Heater (Front, RH) Circuit High
- DTC P0037: Ho2S Heater (Rear, RH) Circuit Low
- DTC P0038: Ho2S Heater (Rear, RH) Circuit High
- DTC P0051: Ho2S Heater (Front, LH) Circuit Low
- DTC P0052: Ho2S Heater (Front, LH) Circuit High
- DTC P0057: Ho2S Heater (Rear, LH) Circuit Low
- DTC P0058: Ho2S Heater (Rear, LH) Circuit High
- DTC P0101: MAF Sensor Inconsistent With TP Sensor
- DTC P0102: MAF Circuit Low Input
- DTC P0103: MAF Circuit High Input
- DTC P0106: EGR Boost Sensor Circuit Performance Problem
- DTC P0107: EGR Boost Sensor Circuit Low Input
- DTC P0108: EGR Boost Sensor Circuit High Input
- DTC P0111: IAT Performance Problem
- DTC P0112: IAT Circuit Low Input
- DTC P0113: IAT Circuit High Input
- DTC P0116: ECT Circuit Performance Problem
- DTC P0117: ECT Circuit Low Input
- DTC P0118: ECT Circuit High Input
- DTC P0121: Throttle Position Stuck Closed
- DTC P0122: TP Circuit Low Input
- DTC P0123: TP Circuit High Input
- DTC P0125: Excessive Time To Enter Closed Loop Fuel Control
- DTC P0126, P0128: Coolant Thermostat Stuck Closed
- DTC P0131, P0132, P0151, P0152: Ho2S (Front, RH) No Inversion (Stuck Low), (Stuck High); Ho2S (Front, LH) No Inversion (Stuck Low), (Stuck High)
- DTC P0133, P0153: Ho2S (Front, RH) Circuit Malfunction; Ho2S (Front, LH) Circuit Malfunction
- DTC P0134, P0154: Ho2S (Front, RH) Circuit No Activity Detected; Ho2S (Front, LH) Circuit No Activity Detected
- DTC P0138, P0158: Ho2S (Rear, RH) Circuit High Input; Ho2S (Rear, LH) Circuit High Input
- DTC P0140, P0160: Ho2S (Rear, RH) Circuit No Activity Detected; Ho2S (Rear, LH) Circuit No Activity Detected
- DTC P0171, P0174: Fuel Trim System (RH) Too Lean; Fuel Trim System (LH) Too Lean
- DTC P0172, P0175: Fuel Trim System (RH) Too Rich; Fuel Trim System (LH) Too Rich
- DTC P0300: Random Misfire Detected
- DTC P0301, P0302, P0304, P0305, P0306: Cylinder No.1; No.2; No.3; No.4; No. 5; No. 6 Misfire Detected
- DTC P0327: Knock Sensor Circuit Low Input
- DTC P0328: Knock Sensor Circuit High Input
- DTC P0335: CKP Sensor Circuit Malfunction
- DTC P0340: CMP Sensor Circuit Malfunction
- DTC P0401:EGR Flow Insufficient Detected
- DTC P0403: EGR Valve (Stepper Motor) Circuit Malfunction
- DTC P0421, P0431:Warm-Up Catalyst System (RH) Efficiency Below Threshold; Warm-Up Catalyst System (LH) Efficiency Below Threshold
- DTC P0441: Evaporative Emission Control System Incorrect Purge Flow
- DTC P0442: Evaporative Emission Control System Leak Detected (Small Leak)
- DTC P0443: Evaporative Emission Control System Purge Control Valve Circuit Malfunction
- DTC P0446: Change Over Valve (COV) (EVAP System Leak Detection Pump) Stuck Closed
- DTC P0456: Evaporative Emission Control System Leak Detected (Very Small Leak)
- DTC P0461: Fuel Gauge Sender Unit Circuit Range/Performance
- DTC P0462: Fuel Gauge Sender Unit Circuit Low Input
- DTC P0463: Fuel Gauge Sender Unit Circuit High Input
- DTC P0480: Fan Control Module Circuit Malfunction
- DTC P0500: Vehicle Speed Sensor (VSS) Circuit Malfunction
- DTC P0505: IAC Valve Circuit Malfunction
- DTC P0506: Idle Control System Rpm Lower Than Expected
- DTC P0507: Idle Control System Rpm Higher Than Expected
- DTC P0550: PSP Switch Circuit Malfunction
- DTC P0660: Intake Manifold Communication Control (IMCC) Circuit Malfunction
- DTC P0703: Brake Switch Input Malfunction
- DTC P1309:Pcm Ic For Misfire Detection
- DTC P1487: EGR Boost Sensor Solenoid Valve Circuit Malfunction
- DTC P1562: Pcm+BB (Back-Up Battery) Voltage Low
- DTC P1602: Immobilizer Unit-Pcm Communication Error
- DTC P1603: Key Id Numbers Are Not Registered In Pcm
- DTC P1604: Code Word Is Not Registered In Pcm
- DTC P1621: Code Word Does Not Match After Engine Cranking
- DTC P1622: Key Id Number Does Not Match
- DTC P1623: Code Word Or Key Id Number Read/Write Error In Pcm
- DTC P1624: Immobilizer System Communication Counter = 0
- DTC P1631:GRNERATOR Output Signal No Electricity
- DTC P1633: Battery Overcharge
- DTC P1634: Generator Terminal B Circuit Open
- DTC P2401: Evaporative Emissions System Leak Detection Pump Motor Circuit Low Input
- DTC P2402: Evaporative Emissions System Leak Detection Pump Motor Circuit High Input
- DTC P2404: Evaporative Emissions System Leak Detection Pump Air Filter Clogging
- DTC P2405: Evaporative Emissions System Leak Detection Pump Orifice Fallen Off
- DTC P2407: Evaporative Emissions System Leak Detection Pump Heater Malfunction
- DTC U0073: Can Bus Off
- DTC U0101: Pcm Cannot Receive Any Signals From TCM
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.