[ Model - ECLIPSE CROSS / Year - 2018 ]
2018 / ECLIPSE CROSS / EC - Workshop Manual
13 -FUEL > 13A-DIRECT INJECTION AND MULTIPOINT FUEL INJECTION (DI AND MPI) > TROUBLESHOOTING > DIAGNOSIS CODE PROCEDURES > CODE NO. P2252 OXYGEN SENSOR OFFSET CIRCUIT LOW VOLTAGE
Code No. P2252: Oxygen Sensor Offset Circuit Low Voltage
 
 
 
 
OPERATION
  • Check code No. P0137: oxygen sensor (rear) circuit low voltage (Refer to ).
 
 
FUNCTION
  • The engine-ECU watches and checks whether the offset voltage of the oxygen sensor is normal or not.
 
 
TROUBLE JUDGEMENT
Check Condition
  • More than 2 seconds have passed since the engine starting sequence was completed.
Judgement Criterion
  • Oxygen sensor offset voltage is less than 0.4 V for 2 seconds.
FAIL-SAFE AND BACKUP FUNCTION
  • None
 
 
PROBABLE CAUSES
  • Failed oxygen sensor (rear)
  • Short circuit in oxygen sensor (rear) circuit or loose connector contact
  • Failed engine-ECU
 
 
DIAGNOSIS PROCEDURE
STEP 1. Check oxygen sensor (rear) itself.
  • Oxygen sensor check (Refer to ).
Is the check result normal?
Go to Step 2.
Replace the oxygen sensor (rear).
 
STEP 2. Perform voltage measurement at oxygen sensor (rear) connector.
  • Disconnect connector, and measure at harness side.
  • Ignition switch: ON
  • Voltage between terminal engine-ECU ORLE line and body earth.
OK: 0.4 - 0.6 V
Is the check result normal?
Go to Step 4.
Go to Step 3.
 
STEP 3. Check of short to earth in ORLE line between oxygen sensor (rear) connector and engine-ECU connector.
Is the check result normal?
Go to Step 4.
Repair the connector(s) or wiring harness.
 
STEP 4. M.U.T.-IIISE diagnosis code
  • Reconfirmation of diagnosis code.
Is the diagnosis code set?
Replace the engine-ECU.
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).