Nissan GT-R (R35) · Service Manual ENGINE

P0133, P0153 A/F SENSOR 1

VR38

P0133 P0153

Description


The air fuel ratio (A/F) sensor 1 is a planar one-cell limit current sensor. The sensor element of the A/F sensor 1 is composed an electrode layer, which transports ions. It has a heater in the element.

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The sensor is capable of precise measurement = 1, but also in the lean and rich range. Together with its control electronics, the sensor outputs a clear, continuous signal throughout a wide range.
The exhaust gas components diffuse through the diffusion layer at the sensor cell. An electrode layer is applied voltage, and this current relative oxygen density in lean. Also this current relative hydrocarbon density in rich.

Therefore, the A/F sensor 1 is able to indicate air fuel ratio by this electrode layer of current. In addition, a heater is integrated in the sensor to ensure the required operating temperature of about 800°C (1,472°F).

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DTC Logic

 
 DTC DETECTION LOGIC

To judge the malfunction of A/F sensor 1, this diagnosis measures response time of the A/F signal computed by ECM from the A/F sensor 1 signal. The time is compensated by engine operating (speed and load), fuel feedback control constant, and the A/F sensor 1 temperature index. Judgment is based on whether the compensated time (the A/F signal cycling time index) is inordinately long or not.

DTC No.
Trouble diagnosis name
DTC detecting condition
Possible Cause
P0133
Air fuel ratio (A/F) sensor 1 (bank 1) circuit slow response
  • The response of the A/F signal computed by ECM from A/F sensor 1 signal takes more than the specified time.
  • Harness or connectors
    (The A/F sensor 1 circuit is open or shorted.)
  • A/F sensor 1
  • A/F sensor 1 heater
  • Fuel pressure
  • Fuel injector
  • Intake air leaks
  • Exhaust gas leaks
  • PCV
  • Mass air flow sensor
P0153
Air fuel ratio (A/F) sensor 1 (bank 2) circuit slow response

 
 DTC CONFIRMATION PROCEDURE

 
 1.PRECONDITIONING
 
 2.PERFORM DTC CONFIRMATION PROCEDURE-I
 
 3.PERFORM DTC CONFIRMATION PROCEDURE-II
 
 4.PERFORM DTC CONFIRMATION PROCEDURE-II
 
 5.CHECK AIR-FUEL RATIO SELF-LEARNING VALUE
 
 6.DETECT MALFUNCTIONING PART
 
 7.PERFORM DTC CONFIRMATION PROCEDURE

Diagnosis Procedure


 
 1.CHECK GROUND CONNECTION
 
 2.RETIGHTEN A/F SENSOR 1
 
 3.CHECK EXHAUST GAS LEAK
 
 4.CHECK FOR INTAKE AIR LEAK
 
 5.CLEAR THE MIXTURE RATIO SELF-LEARNING VALUE
 
 6.CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT
 
 7.DETECT MALFUNCTIONING PART
 
 8.CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
 
 9.CHECK AIR FUEL RATIO (A/F) SENSOR 1 HEATER
 
 10.CHECK MASS AIR FLOW SENSOR
 
 11.CHECK PCV VALVE
 
 12.CHECK INTERMITTENT INCIDENT
 
 13.REPLACE AIR FUEL RATIO (A/F) SENSOR 1