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Home >> Mazda >> 2021 >> 3 Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> On-Board Diagnostic - Engine Control System (VINS 7, L, M) (1 Of 4) >> DTC P0134-00: A/F Sensor Circuit No Activity Detected >> Troubleshooting Diagnostic Procedure >> Intention of troubleshooting procedure

Intention of troubleshooting procedure

TROUBLESHOOTING DIAGNOSTIC PROCEDURE

Step Inspection Results Action
1 PURPOSE: VERIFY IF A/F SENSOR IS INSTALLED CORRECTLY
Yes Replace the A/F sensor and perform the repair completion verification.
(See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [(VIN M) (US)] .)
(See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [(VIN 7 & VIN L) (US)] .)
No Correctly install the A/F sensor and perform the repair completion verification.
(See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [(VIN M) (US)] .)
(See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [(VIN 7 & VIN L) (US)] .)
2 PURPOSE: VERIFY IF A/F SENSOR IS INSTALLED CORRECTLY
Yes Go to the next step.
No Correctly install the A/F sensor and perform the repair completion verification.
(See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [(VIN M) (US)] .)
(See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [(VIN 7 & VIN L) (US)] .)
Repair completion verification 1 PURPOSE: VERIFY THAT VEHICLE IS REPAIRED
  • Install/connect the part removed/disconnected during the troubleshooting procedure.
  • Clear the DTC recorded in the memory. (See CLEARING DTC .)
  • Replicate the vehicle conditions at the time the DTC was detected using the following procedure.
  • Perform the DTC inspection for the PCM. (See DTC INSPECTION .)
  • Is the same Pending DTC present?
Yes Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.
(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW (US) .)
If the CAN communication is normal, perform the diagnosis from Step 1.
  • If the malfunction recurs, replace the PCM, then go to the next step.

(See PCM REMOVAL/INSTALLATION [(VIN M) (US)] .) (See PCM REMOVAL/INSTALLATION [(VIN 7 & VIN L) (US)] .)
No Go to the next step.
Repair completion verification 2 PURPOSE: VERIFY IF OTHER DTCs DISPLAYED
  • Perform the DTC inspection. (See DTC INSPECTION .)
  • Are any other DTCs displayed?
Yes Repair the malfunctioning location according to the applicable DTC troubleshooting.
No DTC troubleshooting completed.