Nissan GT-R (R35) · Service Manual ENGINE

P0037, P0038, P0057, P0058 HO2S2 HEATER

VR38

P0037 P0038 P0057 P0058

Description

 
 SYSTEM DESCRIPTION

Sensor
 		Input signal to ECM
 		ECM function
 		Actuator
Camshaft position sensor (PHASE)
Crankshaft position sensor (POS)
 		Engine speed
 		Heated oxygen sensor 2 heater control
 		Heated oxygen sensor 2 heater
Engine coolant temperature sensor
 		Engine coolant temperature
Mass air flow sensor
 		Amount of intake air

The ECM performs ON/OFF control of the heated oxygen sensor 2 heater corresponding to the engine speed, amount of intake air and engine coolant temperature.
 
 OPERATION

Engine speed
 		Heated oxygen sensor 2 heater
Above 3,600 rpm
 		OFF
Below 3,600 rpm after the following conditions are met.
  • Engine: After warming up
  • Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1 minute under no load
 		ON

DTC Logic

 
 DTC DETECTION LOGIC

DTC No.
 		Trouble diagnosis name
 		DTC detecting condition
 		Possible cause
P0037
 		Heated oxygen sensor 2 heater (bank 1) control circuit low
 		The current amperage in the heated oxygen sensor 2 heater circuit is out of the normal range.
(An excessively low voltage signal is sent to ECM through the heated oxygen sensor 2 heater.)
  • Harness or connectors
    (The heated oxygen sensor 2 heater circuit is open or shorted.)
  • Heated oxygen sensor 2 heater
P0038
 		Heated oxygen sensor 2 heater (bank 1) control circuit high
 		The current amperage in the heated oxygen sensor 2 heater circuit is out of the normal range.
(An excessively high voltage signal is sent to ECM through the heated oxygen sensor 2 heater.)
  • Harness or connectors
    (The heated oxygen sensor 2 heater circuit is shorted.)
  • Heated oxygen sensor 2 heater
P0057
 		Heated oxygen sensor 2 heater (bank 2) control circuit low
 		The current amperage in the heated oxygen sensor 2 heater circuit is out of the normal range.
(An excessively low voltage signal is sent to ECM through the heated oxygen sensor 2 heater.)
  • Harness or connectors
    (The heated oxygen sensor 2 heater circuit is open or shorted.)
  • Heated oxygen sensor 2 heater
P0058
 		Heated oxygen sensor 2 heater (bank 2) control circuit high
 		The current amperage in the heated oxygen sensor 2 heater circuit is out of the normal range.
(An excessively high voltage signal is sent to ECM through the heated oxygen sensor 2 heater.)
  • Harness or connectors
    (The heated oxygen sensor 2 heater circuit is shorted.)
  • Heated oxygen sensor 2 heater

 
 DTC CONFIRMATION PROCEDURE

 
 1.PRECONDITIONING
 
 2.PERFORM DTC CONFIRMATION PROCEDURE

Diagnosis Procedure


 
 1.CHECK GROUND CONNECTION
 
 2.CHECK HO2S2 POWER SUPPLY CIRCUIT
 
 3.DETECT MALFUNCTIONING PART
 
 4.CHECK HO2S2 OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
 
 5.CHECK HEATED OXYGEN SENSOR 2 HEATER
 
 6.REPLACE HEATED OXYGEN SENSOR 2
 
 7.CHECK INTERMITTENT INCIDENT

Component Inspection


 
 1.CHECK HEATED OXYGEN SENSOR 2 HEATER
 
 2.REPLACE HEATED OXYGEN SENSOR 2