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HOMESERVICE MANUALSMAZDA2006B4000 BASE, AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE SYMPTOM TROUBLESHOOTING - (3 OF 5)DTC APPLICATION CHART - POWERTRAIN CONTROL MODULE (PCM)FUEL INJECTOR MALFUNCTION
2006 Mazda B4000 Base, Automatic

Fuel Injector Malfunction

2006 Mazda B4000 Base, AutomaticSECTION Fuel Injector Malfunction
DTC P0201, P0202, P0203, P0204, P0205, P0206 DETECTION CONDITION & POSSIBLE CAUSES

DTC P0201, P0202, P0203, P0204, P0205, P0206 FUEL INJECTOR MALFUNCTION
DETECTION CONDITION 
  • P0201-P0206 indicates the fuel injector does not operate electrically even though the harness assembly and fuel injectors test satisfactorily.
POSSIBLE CAUSE 
  • Faulty fuel injector driver within the powertrain control module (PCM)
HINT  Fuel Injector Description 
  • Solenoid-operated valve that meters fuel flow to the engine.
    • Opens and closes a constant number of times per crankshaft revolution.
    • The amount of fuel is controlled by the length of time it is held open.
  • Normally closed and is operated by 12 V VPWR from the electronic engine control power relay with the ground controlled by the PCM.
G04306923Courtesy of MAZDA MOTORS CORP.
G04306924Courtesy of MAZDA MOTORS CORP.
DTC P0201, P0202, P0203, P0204, P0205, P0206 DIAGNOSTIC PROCEDURE

DTCP0201.P0202, P0203, P0204, P0205, P0206 FUEL INJECTOR MALFUNCTION
STEP INSPECTION ACTION
1
  • Was the PCM quick test performed?
 Yes Go to next step.
No Perform PCM quick test. See PCM QUICK TEST  .
2 CHECK FUEL INJECTOR(S) AND HARNESS RESISTANCE
NOTE:
  • Continuous memory DTCs will be erased during this test.
RENDER: 1.0x

NO RELATED

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
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  • • You are missing required tools, torque specs, or safe lifting equipment.
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