Engine-Codes - Generic - P118A

P118A - Bank 3 Probe 1 Voltage Too Low Leakage Air

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

P118A Possible Causes

  • Exhaust leaks
  • Faulty Oxygen Sensor
  • Oxygen Sensor harness is open or shorted
  • Oxygen Sensor circuit poor electrical connection

How do I fix code P118A?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

Cost of diagnosing the P118A code

Labor: 1.0

The cost of diagnosing the P118A code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P118A Meaning

The Engine Control Module (ECM) monitors the Oxygen Sensor. The ECM sets the OBDII code when the Oxygen Sensor is not to factory specifications.

P118A More Information

Need more information on how to fix the P118A code?
Get Access to Factory Service Manuals

Information for specific makes

Need more help?

Get the P118a code diagnosed by a professional: Find a repair shop in your area