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Mazda Diagnostic Codes, Trouble Codes and Descriptions. Fuel Injected.

WesTech Auto

Diagnostic Codes

Mazda

Fuel Injected (Before 1995)
Except RX-7
1 Ignition Pulse.
2 Distributor - No 2 Signal.
2 No 2 Signal (626 and MX-6).
2 Crank Angle Sensor - No 2 Signal (1992-1995 929, MX-3 1.8L).
3 Distributor - G or G1 Signal.
3 Crank Angle Sensor - G Signal (MX-3 1.8L).
4 Distributor - No #1 Signal or G2 Signal.
4 Crank Angle Sensor - No 1 Signal (MX-3 1.8L).
5 Knock Sensor.
6 Vehicle Speed Sensor.
6 Air Flow Meter (MX-3 1.8L).
7 Knock Sensor - right hand side.
8 Air Flow Meter.
9 Water Thermo Sensor.
10 Intake Air Thermo Sensor - Air Flow Meter.
11 Intake Air Thermo Sensor - Dynamic Chamber.
12 Throttle Sensor.
14 Atmospheric Pressure Sensor.
15 Oxygen Sensor or Heated Oxygen Sensor - left hand side.
16 EGR Position/Function Sensor.
17 Feedback System or Closed Loop System - left hand side.
23 Oxygen Sensor or Heated Oxygen Sensor - right hand side.
24 Feedback System or Closed Loop System - right hand side.
25 Solenoid Valve - Pressure Regulator.
26 Solenoid Valve.
27 Solenoid Valve.
28 Solenoid Valve - EGR Vacuum side.
29 Solenoid Valve - EGR Vent side.
30 Cold Start Injector Relay.
34 IAC Valve.
36 Heated Oxygen Sensor - right hand side.
37 Heated Oxygen Sensor - left hand side.
40 Solenoid Valve - Triple Induction Control System & 02S Replay.
40 Solenoid Valve - Variable Resonance Induction System Solenoid Valve - VRIS 1.
42 Wastegate Solenoid Valve.
46 Solenoid Valve - VRIS 2.
65 A/C Signal - PCMT.
67 Coolant Fan Relay No. 1.
69 ECT Sensor.
The Diagnostic Codes and Explanations are derived from Manufacturer supplied Technical Data. WesTech does not guarantee the accuracy of this Information nor can it be held liable for providing it.
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