Nissan Rogue (T33) 2021-Present Service Manual: P0031 A/f Sensor 1 Heater
DTC Description
DTC DETECTION LOGIC
| DTC |
CONSULT screen terms (Trouble diagnosis content) |
DTC detection condition | ||
| P0031 | 00 |
HO2S1 HTR (B1) (HO2S heater control circuit low bank 1 sensor 1) |
Diagnosis condition | Engine running at idle |
| Signal (terminal) | A/F sensor 1 heater signal | |||
| Threshold | An excessively low voltage signal is sent to ECM through the A/F sensor 1 heater | |||
| Diagnosis delay time | — | |||
POSSIBLE CAUSE
-
Harness or connectors (The A/F sensor 1 heater circuit is open or shorted.)
-
The A/F sensor 1 heater
FAIL-SAFE
Not applicable
DTC Confirmation Procedure
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.
-
Turn ignition switch OFF and wait at least 10 seconds.
-
Turn ignition switch ON.
-
Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than between 11 V at idle.
>>
GO TO 2.
PERFORM DTC CONFIRMATION PROCEDURE
-
Start engine and let it idle for at least 10 seconds.
-
Check 1st trip DTC.
Is 1st trip DTC detected?
YES>>Proceed to DTC Diagnosis Procedure.
NO-1>>To check malfunction symptom before repair: Refer to Intermittent Incident.
NO-2>>Confirmation after repair: INSPECTION END
DTC Diagnosis Procedure
CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT
-
Disconnect air fuel ratio (A/F) sensor 1 harness connector.
-
Turn ignition switch ON.
-
Check the voltage between A/F sensor 1 harness connector and ground.
+ − Voltage A/F sensor 1 Connector Terminal F18 4 Ground Battery voltage
Is the inspection result normal?
YES>>GO TO 2.
NO>>Repair or replace error-detected parts.
CHECK A/F SENSOR 1 HEATER OUTPUT SIGNAL CIRCUIT
-
Turn ignition switch OFF.
-
Disconnect ECM harness connector.
-
Check the continuity between A/F sensor 1 harness connector and ECM harness connector.
+ − Continuity A/F sensor 1 ECM Connector Terminal Connector Terminal F18 3 F72 6 Existed -
Also check harness for short to ground and to power.
Is the inspection result normal?
YES>>GO TO 3.
NO>>Repair open circuit, short to ground or short to power in harness or connectors.
CHECK A/F SENSOR 1 HEATER
Check the A/F sensor 1 heater. Refer to Component Inspection.
Is the inspection result normal?
YES>>Check intermittent incident. Refer to Intermittent Incident.
NO>>GO TO 4.
REPLACE AIR FUEL RATIO (A/F) SENSOR 1
Replace malfunctioning air fuel ratio (A/F) sensor 1. Refer to Exploded View.
>>
INSPECTION END
Other materials:
Heated Oxygen Sensor 2
Component Function Check
PERFORM COMPONENT FUNCTION CHECK-1
Without CONSULT
Start engine and warm it up to normal operating temperature.
Turn ignition switch OFF and wait at least 10 seconds.
Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute u ...
Driver Monitor Camera Control Unit
Reference Value
VALUES ON THE DIAGNOSIS TOOL Monitor item Condition Value/Status
Left eye
Ignition switch ON
When the open / closed state of the driver's right eye is unclear
Invalid
When the driver's right eye is open
Open
When the driver's right eye is closed
Close
...
Oil Level Sensor Signal Circuit
DiagnosisProcedure
CHECK OIL LEVEL SENSOR CIRCUIT
Ignition switch OFF.
Disconnect combination meter harness connector and oil level sensor harness connector.
Check continuity between combination meter harness connector and oil level sensor harness connector.
Combination meter
Oi ...
