P1606 - FAULT CODE - OBD2

POST UPDATED IN January, 2023

P1606 Code failures by brands

P1606 HYUNDAI: G-SENSOR SIGNAL NOT PLAUSIBLE

Description of DTC code P1606

The G-Sensor is also known as the Road Sensor. It is a device that detects gravity acceleration. When road conditions are rough (potholes or other), vertical acceleration levels occur. While driving under such conditions, the Engine Control Module (ECM) checks to determine if crankshaft speed changes have occurred due to road inconsistencies or ignition problems. If the G-Sensor detects one of these conditions, the ECM will be notified, which in turn performs diagnostic trouble activation for the ignition

The DTC P1606 OBDII code refers to the faults detected on the G-Sensor, which does not have a plausible signal.

Symptoms of fault code P1606

Causes of OBD2 P1606

The P1606 OBD2 fault code is set due to the following reasons:

  • The G-Sensor cables or connectors may be damaged.
  • The G-Sensor circuit may be faulty in its connections.
  • The Road Sensor may be in poor condition.

Possible solutions of the DTC code P1606

To troubleshoot the P1606 OBDII diagnostic code, try this:

  • First, consult the Technical Service Bulletins.
  • Check for wear damage or burn spots in the Road Sensor wiring. If one of these conditions is detected, make repairs.
  • Check the G-Sensor circuit connections for good condition. Look for connection deficiencies caused by excessive levels of corrosion. Repair if necessary.
  • Check the integrity of the Road Sensor based on the manufacturer's recommendations. If you determine that the road sensor does not meet the specifications, replace it.

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