P1272 2003 NISSAN SENTRA Code - Air Fuel Ratio Sensor 1 Bank 1 Circuit No Activity Detected
|P1272 2003 NISSAN SENTRA code possible causes
- Faulty air fuel ratio (A/F) Sensor 1 Bank 1
- Air fuel ratio (A/F) Sensor 1 Bank 1 harness is open or shorted
- Air fuel ratio (A/F) Sensor 1 Bank 1 circuit poor electrical connection
|How do I fix the P1272 2003 NISSAN SENTRA code?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 P1272 2003 NISSAN SENTRA code
Labor: 1.0The cost of diagnosing the P1272 2003 NISSAN SENTRA code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.
|When is the P1272 2003 NISSAN SENTRA code detected?The A/F signal computed by ECM from the A/F sensor 1 signal is constantly approx. 0V.
|What are P1272 2003 NISSAN SENTRA code possible symptoms?
- Engine Light ON (or Service Engine Soon Warning Light)
- Possible rough engine idle
|P1272 2003 NISSAN SENTRA code descriptionThe A/F sensor is a planar dual-cell limit current sensor. The sensor element of the A/F sensor is the combination of a Nernst concentration cell (sensor cell) with an oxygen-pump cell, which transports ions. It has a heater in the element.
The sensor is capable of precise measurement λ= 1, but also in the lean and rich range. Together with its control electronics, the sensor outputs a clear, continuous signal throughout a wide λ range (0.7 < λ < air).
The exhaust gas components diffuse through the diffusion gap at the electrode of the oxygen pump and Nernst concentration cell, where they are brought to thermodynamic balance.
An electronic circuit controls the pump current through the oxygen-pump cell so that the composition of the exhaust gas in the diffusion gap remains constant at λ = 1. Therefore, the A/F sensor is able to indicate air/fuel ratio by this pumping of current. In addition, a heater is integrated in the sensor to ensure the required operating temperature of 700 - 800 C (1,292 - 1,472 F).
|Need more information with the P1272 2003 NISSAN SENTRA code?Need more information on how to fix the P1272 2003 NISSAN SENTRA code? Get Access to Factory Service Manuals
|Need help with a P1272 2003 NISSAN SENTRA code?Get the P1272 2003 Nissan Sentra code diagnosed by a professional: Find a repair shop in your area
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