P0154

2017-10-10

Description:

  • The fault code P0154 represents an issue with the circuit controlling the oxygen sensor for bank 2, sensor 1. This may cause improper fuel-air mixture and affect the vehicle's performance.

Possible Symptoms:

  • Illuminated Check Engine Light

  • Decreased fuel efficiency

  • Rough idle or stalling

  • Poor engine performance and acceleration

Possible Causes:

  • Failed oxygen sensor

  • Damaged or corroded wiring in the circuit

  • Loose, disconnected, or damaged electrical connections

  • Malfunctioning Engine Control Module (ECM)

Related Parts:

  • Oxygen Sensor: This is one of the parts that fails very commonly. It measures the amount of oxygen to ensure proper combustion. Problems in the Oxygen Sensor lead to poor fuel economy

Possible Solutions:

  • Replace the oxygen (O2) sensor

  • Check and repair any damaged or corroded wiring in the circuit

  • Check and repair loose, disconnected, or damaged electrical connections

  • Replace the engine control module (ECM) if necessary

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