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.
2003 Mazda B2300 Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Engine Performance DTCS
ENGINE PERFORMANCE DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| P0102 | Mass Airflow (MAF) Signal - Voltage Low |
| P0103 | Mass Airflow (MAF) Signal - Voltage High |
| P0107 | Manifold Absolute Pressure (MAP) Sensor - Malfunction |
| P0108 | Manifold Absolute Pressure (MAP) Sensor - Malfunction |
| P0109 | Manifold Absolute Pressure (MAP) Sensor - Malfunction |
| P0112 | Intake Air Temperarure (IAT) Sensor |
| P0113 | Intake Air Temperarure (IAT) Sensor |
| P0117 | Engine Coolant Temperature (ECT) Sensor |
| P0118 | Engine Coolant Temperature (ECT) Sensor |
| P0121 | Throttle Position (TP) Sensor |
| P0122 | Throttle Position (TP) Sensor |
| P0123 | Throttle Position (TP) Sensor |
| P0125 | Engine Coolant Temperature (ECT) Sensor |
| P0131 | HO2S-11 (Front Right V6 Or Front 4-Cyl.) |
| P0133 | HO2S-11 (Front Right V6 Or Front 4-Cyl.) |
| P0135 | HO2S HTR-11 (Front Right V6 Or Front 4-Cyl.) |
| P0136 | HO2S-12 (Bank 1) |
| P0141 | HO2S HTR-12 (Rear) |
| P0151 | HO2S-21 (Front Left) |
| P0153 | HO2S-21 (Front Left) |
| P0155 | HO2S HTR-21 (Front Left) |
| P0171 | Adaptive Fuel Control |
| P0172 | Adaptive Fuel Control |
| P0174 | Adaptive Fuel Control |
| P0175 | Adaptive Fuel Control |
| P0176 | Flexible Fuel (FF) Sensor Malfunction |
| P0201 | Fuel Injector No. 1 - Malfunction |
| P0202 | Fuel Injector No. 2 - Malfunction |
| P0203 | Fuel Injector No. 3 - Malfunction |
| P0204 | Fuel Injector No. 4 - Malfunction |
| P0205 | Fuel Injector No. 5 - Malfunction |
| P0206 | Fuel Injector No. 6 - Malfunction |
| P0230 | Fuel Pump (FP) Primary Or Secondary Circuit |
| P0231 | Fuel Pump (FP) Primary Or Secondary Circuit |
| P0232 | Fuel Pump (FP) Primary Or Secondary Circuit |
| P0300 | Multiple Misfire Detection |
| P0301 | Cylinder No. 1 Misfire - Misfire Detection Monitor |
| P0302 | Cylinder No. 2 Misfire - Misfire Detection Monitor |
| P0303 | Cylinder No. 3 Misfire - Misfire Detection Monitor |
| P0304 | Cylinder No. 4 Misfire - Misfire Detection Monitor |
| P0305 | Cylinder No. 5 Misfire - Misfire Detection Monitor |
| P0306 | Cylinder No. 6 Misfire - Misfire Detection Monitor |
| P0316 | Misfire Detected |
| P0320 | Crankshaft Position (CKP) Sensor |
| P0325 | Knock Sensor (KS) |
| P0326 | Knock Sensor (KS) |
| P0340 | Camshaft Position (CMP) Sensor |
| P0350 | Ignition Coil Primary/Secondary Circuit Malfunction |
| P0351 | Integrated Ignition Coil Failure |
| P0352 | Integrated Ignition Coil Failure |
| P0353 | Integrated Ignition Coil Failure |
| P0400 | Electric EGR (EEGR) System - Malfunction |
| P0401 | EGR System |
| P0402 | EGR System |
| P0403 | Electric EGR (EEGR) System - Malfunction |
| P0420 | Catalyst Efficiency Monitor (Bank 1) |
| P0430 | Catalyst Efficiency Monitor (Bank 2) |
| P0442 | EVAP Monitor |
| P0443 | EVAP Purge Solenoid |
| P0451 | EVAP System |
| P0452 | Fuel Tank Pressure (FTP) Sensor |
| P0453 | Fuel Tank Pressure (FTP) Sensor |
| P0455 | EVAP System - Malfunction |
| P0456 | EVAP System - Malfunction |
| P0457 | EVAP System |
| P0460 | Fuel Level Input |
| P0461 | EVAP System |
| P0505 | Idle Air Control (IAC) Valve Assembly - Malfunction |
| P0603 | PCM Keep Alive Power (KAPWR) Circuit |
| P0605 | PCM Read Only Memory (ROM) Error |
| P0703 | Brake Pedal Position (BPP) Switch |
| P0704 | Clutch Pedal Position (CPP) Switch |
| P1000 | OBD-II Drive Cycle |
| P1001 | Data Link Connector (DLC) Or DTC Not Listed |
| P1100 | Mass Airflow (MAF) Sensor - Out Of Range |
| P1101 | Mass Airflow (MAF) Sensor - Out Of Range |
| P1112 | Intake Air Temperature (IAT) Sensor |
| P1116 | Engine Coolant Temperature (ECT) Sensor |
| P1117 | Engine Coolant Temperature (ECT) Sensor |
| P1120 | Throttle Position (TP) Sensor |
| P1121 | Throttle Position (TP) Sensor |
| P1124 | Throttle Position (TP) Sensor |
| P1125 | Throttle Position (TP) Sensor |
| P1127 | HO2S-12 (Rear) |
| P1128 | Front HO2S Signal |
| P1130 | Fuel Trim Not Switching At Fuel Trim (Rich Or Lean) |
| P1131 | Upstream HO2S Not Switching |
| P1132 | Upstream HO2S Not Switching |
| P1137 | HO2S-12 (Rear) |
| P1138 | HO2S-12 (Rear) |
| P1150 | Fuel Trim Not Switching At Fuel Trim (Rich Or Lean) |
| P1151 | Upstream HO2S Not Switching |
| P1152 | Upstream HO2S Not Switching |
| P1260 | Anti-Theft System |
| P1270 | Engine RPM/Vehicle Speed Limiter |
| P1285 | Cylinder Head Temperature (CHT) Sensor |
| P1288 | Cylinder Head Temperature (CHT) Sensor |
| P1289 | Cylinder Head Temperature (CHT) Sensor |
| P1290 | Cylinder Head Temperature (CHT) Sensor |
| P1299 | Cylinder Head Temperature (CHT) Sensor |
| P1309 | Misfire Detection Monitor |
| P1400 | Differential Pressure Feedback EGR (DPFEGR) Sensor |
| P1401 | Differential Pressure Feedback EGR (DPFEGR) Sensor |
| P1405 | Differential Pressure Feedback EGR (DPFEGR) Sensor |
| P1406 | Differential Pressure Feedback EGR (DPFEGR) Sensor |
| P1408 | Electric EGR (EEGR) System - Malfunction |
| P1409 | EGR Vacuum Regulator (EVR) Solenoid |
| P1432 | Thermostat Heater Control (THTRC) (2.3L) |
| P1443 | EVAP System - Malfunction |
| P1450 | EVAP System |
| P1451 | Canister Vent (CV) Solenoid |
| P1460 | A/C Clutch Relay (ACCR) |
| P1464 | A/C Control Signal (ACCS) |
| P1474 | Cooling Fan (2.3L) |
| P1504 | Idle Air Control (IAC) Valve Assembly - Malfunction |
| P1506 | Idle Air Control (IAC) Solenoid |
| P1507 | Idle Air Control (IAC) Valve Assembly - Malfunction |
| P1518 | Intake Manifold Swirl Control (IMSC) (2.3L) - Malfunction |
| P1519 | Intake Manifold Swirl Control (IMSC) (2.3L) - Malfunction |
| P1520 | Intake Manifold Swirl Control (IMSC) (2.3L) - Malfunction |
| P1537 | Intake Manifold Swirl Control (IMSC) (2.3L) - Malfunction |
| P1538 | Intake Manifold Swirl Control (IMSC) (2.3L) - Malfunction |
| P1605 | PCM Keep Alive Power (KAPWR) Circuit |
| P1633 | PCM Keep Alive Power (KAPWR) Circuit |
| P1639 | PCM Corrupted Or Not Programmed Correctly |
| P1650 | Power Steering Pressure (PSP) Switch (2.3L) - Malfunction |
| P1651 | Power Steering Pressure (PSP) Switch (2.3L) - Malfunction |
| P1703 | Brake Pedal Position (BPP) Switch |
| P1709 | Clutch Pedal Position (CPP) Switch |
| P1729 | 4x4 Low (4X4L) Switch |
| P1780 | Transmission Control Switch (TCS) Or Transmission Control Indicator Light (TCIL) Circuit Malfunction |
| P1781 | 4x4 Low (4X4L) Switch |
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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