DTC Inspection Priority Chart

2019 Infiniti Q70 3.7 Luxe, AWDSECTION DTC Inspection Priority Chart

When multiple DTCs are displayed simultaneously, check one by one depending on the following priority list.

Priority

Detected item (DTC)

1

  • U1000 CAN COMM CIRCUIT
  • U0424 HVAC CAN CIR 1*

2

  • C1170 VARIANT CODING

3

  • C1130 ENGINE SIGNAL 1
  • C1144 ST ANG SEN SIGNAL

4

  • C1109 BATTERY VOLTAGE [ABNORMAL]
  • C1111 PUMP MOTOR
  • C1140 ACTUATOR RLY

5

  • C1101 RR RH SENSOR-1
  • C1102 RR LH SENSOR-1
  • C1103 FR RH SENSOR-1
  • C1104 FR LH SENSOR-1
  • C1105 RR RH SENSOR-2
  • C1106 RR LH SENSOR-2
  • C1107 FR RH SENSOR-2
  • C1108 FR LH SENSOR-2
  • C1115 ABS SENSOR [ABNORMAL SIGNAL]
  • C1116 STOP LAMP SW
  • C1120 FR LH IN ABS SOL
  • C1121 FR LH OUT ABS SOL
  • C1122 FR RH IN ABS SOL
  • C1123 FR RH OUT ABS SOL
  • C1124 RR LH IN ABS SOL
  • C1125 RR LH OUT ABS SOL
  • C1126 RR RH IN ABS SOL
  • C1127 RR RH OUT ABS SOL
  • C1142 PRESS SEN CIRCUIT
  • C1143 ST ANG SEN CIRCUIT
  • C1145 YAW RATE SENSOR
  • C1146 SIDE G SEN CIRCUIT
  • C1160 DECEL G SEN SET
  • C1164 CV 1
  • C1165 CV 2
  • C1197 VACUUM SENSOR
  • C1198 VACUUM SEN CIR
  • C1199 BRAKE BOOSTER
  • C119A VACUUM SEN VOLT

6

  • C1155 BR FLUID LEVEL LOW

*: This is DTC that is detected in ADAS control unit side.

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

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

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.