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Home >> Mazda >> 2017 >> CX-5 Grand Select, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 145 (On-Board Diagnostic - Engine Control (2 Of 5)) >> DTC P0134; Pcm A/F Sensor Circuit No Activity Detected >> Details On DTCs

Details On DTCs

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DETECTION CONDITION AND POSSIBLE CAUSE

DESCRIPTION A/F sensor circuit no activity detected
DETECTION CONDITION Determination conditions
  • The condition in which the A/F sensor element impedance is the specified value or more continues for 35 s.
Preconditions
  • Battery voltage: 11-18 V(1)
  • The following DTCs are not detected:
    • A/F sensor heater: P0031:00, P0032:00
      • A/F sensor: P0131:00, P0132:00
Malfunction determination period
  • 35 s period
Drive cycle
  • 2
Self test type
  • CMDTC self test
Sensor used
  • A/F sensor
FAIL-SAFE FUNCTION
  • Fixes duty value of A/F sensor heater
  • Stops fuel feedback control of A/F sensor
VEHICLE STATUS WHEN DTCs ARE OUTPUT
  • Illuminates check engine light.
POSSIBLE CAUSE
  • A/F sensor malfunction
    • A/F sensor connector or terminals malfunction
    • A/F sensor related wiring harness malfunction
    • A/F sensor loose
      • A/F sensor deterioration
  • A/F sensor related wiring harness malfunction
  • PCM malfunction
(1) Value can be verified by displaying PIDs using M-MDS
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