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P2626 Code - Oxygen Sensor Pumping Current Trim Circuit/Open Bank 1 Sensor 1

- Code Popularity: 35,909 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 2/3
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What are the Possible Causes of the DTC P2626?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Heated Exhaust Gas Oxygen Sensor Bank 1 Sensor 1
  • Heated Exhaust Gas Oxygen Sensor Bank 1 Sensor 1 harness is open or shorted
  • Heated Exhaust Gas Oxygen Sensor Bank 1 Sensor 1 circuit poor electrical connection
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How to Fix the DTC P2626?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2626 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

Code P2626 Description

This fault code is stored in the engine control module when a fault is detected with the oxygen sensor current flow circuit. A wideband oxygen sensor is used to measure the actual air to fuel ratio, this is necessary for modern lean burn spark ignition engines and compression ignition engines. A wideband sensor incorporates two sensors integrated into one component. The first part of the sensor is a narrowband cell that samples the exhaust gas (in a measurement chamber) and the outside atmospheric air. The control module maintains a voltage of 450 millivolts from the narrowband sensor, this equates to a lambda value of one. This is referred to as the reference voltage. In order to maintain this value of lambda one, the second part of the sensor is used, it is a pump cell. This is a chemical pump, and if the sampled exhaust gas is comparatively rich the pump cell is supplied with a negative current to "pump" oxygen into the measurement chamber. Conversely, if the sampled exhaust gas is lean the pump cell is supplied with a positive current to "pump" oxygen out of the measurement chamber. The polarity and magnitude of the current flow is a direct indication of the air to fuel ratio.

OBDII Code P2626 - Oxygen Sensor Pumping Current Trim Circuit/Open Bank 1 Sensor 1 - AutoCodes.com
P2626 Code - Oxygen Sensor Pumping Current Trim Circuit/Open Bank 1 Sensor 1

Need More Information on the Code?

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Information for Specific Makes

  • P2626 Acura Air/Fuel Ratio Sensor Bank 1 Sensor 1 Circuit Open
  • P2626 BMW Upstream Oxygen Sensor Open Circuit Monitoring Trim Current Failure Bank 1
  • P2626 Dodge Oxygen Sensor Pumping Current Trim Circuit/Open Bank 1 Sensor 1
  • P2626 Ford Oxygen Sensor Pumping Current Trim Circuit/Open Bank 1 Sensor 1
  • P2626 Honda Air/Fuel Ratio Sensor Bank 1 Sensor 1 Circuit Open
  • P2626 Hyundai HO2S Pumping Current Trim Circuit/Open Bank 1 Sensor 1  
  • P2626 KIA HO2S Pumping Current Trim Circuit/Open Bank 1 Sensor 1  
  • P2626 Lincoln Oxygen Sensor Pumping Current Trim Circuit/Open Bank 1 Sensor 1
  • P2626 Mercedes-Benz O2 Sensor Pumping Current Trim Circuit/Open Bank 1 Sensor 1
  • P2626 Mercury Oxygen Sensor Pumping Current Trim Circuit/Open Bank 1 Sensor 1
  • P2626 MINI Upstream Oxygen Sensor Open Circuit Monitoring Trim Current Failure Bank 1

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