P2197 DTC

P2197

Technical Definition:

Oxygen (O2) Sensor Signal Biased / Stuck Lean (Bank 2 – Sensor 1)

Trouble Code: P2197
Address: 0x2197
System: Powertrain
Subsystem: Fuel and Air Metering
Technical Description:

This code is considered generic because it applies to all makes and models of vehicles (1996-newer), although specific repair steps may be slightly different depending on the model.

Possible Causes:
  • Oxygen (O2) or A/F ratio sensor or sensor heater malfunction
  • Open or short in O2 sensor circuit (wiring, harness)
  • Fuel pressure or fuel injector problem
  • Faulty PCM
  • Intake air or engine vacuum leaks
  • Faulty fuel injector(s)
  • Fuel pressure too high or too low
  • PCV system leak/fault
  • A/F sensor relay faulty
  • MAF sensor malfunction
  • ECT sensor malfunction
  • Fuel pressure too low
  • Fuel leak
  • Air suction in air intake system

Possible Symptoms:

O2 Sensor Signal Biased/Stuck Lean Bank 2 Sensor 1

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes: