Nissan GT-R (R35) · Service Manual ENGINE

P0031, P0032, P0051, P0052 A/F SENSOR 1 HEATER

VR38

P0031 P0032 P0051 P0052

Description

 
 SYSTEM DESCRIPTION

Sensor
 		Input signal to ECM
 		ECM function
 		Actuator
Camshaft position sensor (PHASE)
Crankshaft position sensor (POS)
 		Engine speed
 		Air fuel ratio (A/F) sensor 1 heater control
 		Air fuel ratio (A/F) sensor 1 heater
Mass air flow sensor
 		Amount of intake air

The ECM performs ON/OFF duty control of the A/F sensor 1 heater corresponding to the engine operating condition to keep the temperature of A/F sensor 1 element within the specified range.

DTC Logic

 
 DTC DETECTION LOGIC

DTC No.
 		Trouble diagnosis name
 		DTC detecting condition
 		Possible cause
P0031
 		Air fuel ratio (A/F) sensor 1 heater (bank 1) control circuit low
 		The current amperage in the A/F sensor 1 heater circuit is out of the normal range.
(An excessively low voltage signal is sent to ECM through the A/F sensor 1 heater.)
  • Harness or connectors
    (The A/F sensor 1 heater circuit is open or shorted.)
  • A/F sensor 1 heater
P0032
 		Air fuel ratio (A/F) sensor 1 heater (bank 1) control circuit high
 		The current amperage in the A/F sensor 1 heater circuit is out of the normal range.
(An excessively high voltage signal is sent to ECM through the A/F sensor 1 heater.)
  • Harness or connectors
    (The A/F sensor 1 heater circuit is shorted.)
  • A/F sensor 1 heater
P0051
 		Air fuel ratio (A/F) sensor 1 heater (bank 2) control circuit low
 		The current amperage in the A/F sensor 1 heater circuit is out of the normal range.
(An excessively low voltage signal is sent to ECM through the A/F sensor 1 heater.)
  • Harness or connectors
    (The A/F sensor 1 heater circuit is open or shorted.)
  • A/F sensor 1 heater
P0052
 		Air fuel ratio (A/F) sensor 1 heater (bank 2) control circuit high
 		The current amperage in the A/F sensor 1 heater circuit is out of the normal range.
(An excessively high voltage signal is sent to ECM through the A/F sensor 1 heater.)
  • Harness or connectors
    (The A/F sensor 1 heater circuit is shorted.)
  • A/F sensor 1 heater

 
 DTC CONFIRMATION PROCEDURE

 
 1.PRECONDITIONING
 
 2.PERFORM DTC CONFIRMATION PROCEDURE

Diagnosis Procedure


 
 1.CHECK GROUND CONNECTION
 
 2.CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT
 
 3.DETECT MALFUNCTIONING PART
 
 4.CHECK A/F SENSOR 1 HEATER OUTPUT SIGNAL CIRCUIT
 
 5.CHECK A/F SENSOR 1 HEATER
 
 6.REPLACE AIR FUEL RATIO (A/F) SENSOR 1
 
 7.CHECK INTERMITTENT INCIDENT

Component Inspection


 
 1.CHECK AIR FUEL RATIO (A/F) SENSOR 1
 
 2.REPLACE AIR FUEL RATIO (A/F) SENSOR 1