Air/Fuel Ratio Sensor Bank 2 Sensor 1 Circuit Low Voltage

Table of contents

P2630 ACURA Possible Causes

  • Faulty Air/Fuel Ratio Sensor Bank 2 Sensor 1
  • Air/Fuel Ratio Sensor Bank 2 Sensor 1 harness is open or shorted
  • Air/Fuel Ratio Sensor Bank 2 Sensor 1 circuit poor electrical connection

How do I fix code P2630 ACURA?

  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 P2630 ACURA code

  The cost of diagnosing the P2630 ACURA code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

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

P2630 ACURA Description

  The front air/fuel ratio (A/F) sensor (bank 2, sensor 1) is installed in the exhaust manifold and detects oxygen content in the exhaust gas. The front A/F sensor transmits output voltage to the powertrain control module (PCM). The PCM controls fuel injection duration by comparing the target air/fuel ratio with the front A/F sensor signal. The sensor includes the VS cell, the pump cell, the atmospheric reference cavity, the diffusion layer, and the heater, and it enables overall feedback control. The front A/F sensor (bank 2, sensor 1) has a built-in LABEL resistance to regulate the differences of the sensor characteristics. The PCM reads the resistance to regulate the difference properly. If the LABEL resistance (VLBLB 2 signal voltage) is a set value or more, the PCM detects a malfunction and stores a DTC.


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