Error code

OBD2 P0160

OBD2P0160
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

O2 Sensor Circuit No Activity Detected.

Severity

highThe vehicle may be drivable but with significant performance issues.

Summary

Code P0160 indicates that the heated oxygen sensor (H025) on bank 2, sensor 2 is not sending any signal voltage to the PCM. This can affect fuel efficiency and engine performance.

Symptoms

  • Severe driveability issues such as loss of power, hesitation upon acceleration, and unexpected stalling
  • Increased fuel consumption
  • Visible black smoke from the tailpipe
  • Hard starting
  • Oil dilution due to over-fueling
  • Reduced spark plug life

Common Causes

  • Defective oxygen sensor
  • Damage or corrosion in wiring and connectors of the signal circuit
  • Blown fuse(s) in the heater control circuit (if applicable)
  • Contamination from oil or antifreeze
  • Faulty PCM (rare)

Diagnosis

  1. Check for other stored trouble codes and freeze frame data.
  2. Inspect wiring and connectors for damage or corrosion.
  3. Perform resistance, input voltage, ground, and continuity checks on the signal circuit.
  4. Replace faulty oxygen sensor if necessary.
  5. Test drive to verify repair.

Fixes

  • Replace the defective oxygen sensor

FAQ

What does P0160 mean?

P0160 indicates that the heated oxygen sensor on bank 2, sensor 2 is not sending any signal voltage to the PCM.

How do I fix P0160?

Fixing P0160 involves checking and repairing wiring issues or replacing a faulty oxygen sensor.

View source

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.

More OBD2 codes

All OBD2 codes →Search more codes →