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DTC P2227 [AJ]

BME010202200W03

DTC P2227 | EGR boost sensor circuit performance problem
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DETECTION CONDITION | • PCM monitors input voltage from EGR boost sensor. If input voltage at PCM terminal 37 is below 1.99 V, the PCM determines that the EGR boost sensor circuit has malfunction. Diagnostic support note • This is a continuous monitor (CCM). • The MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
• PENDING CODE is available if the PCM detects the above malfunction condition during the first drive cycle.
• FREEZE FRAME DATA is available.
• DTC is stored in the PCM memory.
POSSIBLE CAUSE | • EGR boost sensor malfunction or substandard performance • EGR boost sensor solenoid malfunction • Loosed, damaged, misconnected, clogged or frozen moisture in vacuum hose from EGR boost sensor solenoid to EGR boost sensor • Loosed, damaged, misconnected, clogged or frozen moisture in vacuum hose from EGR boost sensor solenoid to EGR pipe
• PCM malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
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1 | VERIFY FREEZE FRAME DATA HAS BEEN RECORDED • Has FREEZE FRAME DATA been recorded? | Yes | Go to the next step.
No | Record FREEZE FRAME DATA on repair order, then go to the next step.
2 | VERIFY RELATED REPAIR INFORMATION AVAILABILITY • Check for related Service Information and/or on-line repair information availability. • Is any related repair information available? | Yes | Perform repair or diagnosis according to the available repair information. • If the vehicle is not repaired, go to the next step.
No | Go to the next step.
3 | IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA • Is DTC P2227 on FREEZE FRAME DATA? | Yes | Go to the next step.
No | Go to troubleshooting procedures for DTC on FREEZE FRAME DATA.
4 | INSPECT CONNECTION OF EGR BOOST SENSING RELATED VACUUM HOSES • Inspect following vacuum hoses for loose, damage, improper connection and/or clog.

  - From EGR boost sensor to EGR boost sensor solenoid
  - From EGR boost sensor solenoid to EGR pipe

• Are they normal?
Yes
Go to the next step.
No | Repair or replace vacuum hose, then go to Step 8.
5 | INSPECT EGR BOOST SENSOR SOLENOID AIR FILTER FOR CLOG • Has EGR boost sensor solenoid air filter been clogged? | Yes | Repair air filter clogging, then go to Step 8.
No | Go to the next step.
6 | INSPECT EGR BOOST SENSOR SOLENOID STUCK OPEN OR CLOSE • Inspect EGR boost sensor solenoid. (See EGR BOOST SENSOR SOLENOID VALVE INSPECTION [AJ] (VIN: JM0 LW10J300 301406-, JMZ LW69J7*# 307683-, JM8 LW28J**# 301514-, JM8 LW28A**# 301514- (Assumed)).)
• Is EGR boost sensor solenoid normal?
Yes
Go to the next step.
No | Replace EGR boost sensor solenoid, then go to Step 8.
7 | INSPECT EGR BOOST SENSOR STUCK OPEN OR CLOSE • Inspect EGR boost sensor. (See BAROMETRIC PRESSURE SENSOR/EGR BOOST SENSOR INSPECTION [AJ] (VIN: JM0 LW10J300 301406-, JMZ LW69J7*# 307683-, JM8 LW28J**# 301514-, JM8 LW28A**# 301514- (Assumed)).) • Is EGR boost sensor normal? | Yes | Go to the next step.
No | Replace EGR boost sensor, then go to the next step.
8 | VERIFY TROUBLESHOOTING OF DTC P2227 COMPLETED • Make sure to reconnect all disconnected connectors. • Turn the ignition switch to the ON position (Engine off). • Clear the DTC from the memory using the WDS or equivalent. • Run DRIVE MODE except for Mode 4.
(See OBD DRIVE MODE [AJ] (VIN: JM0 LW10J300 301406-, JMZ LW69J7*# 307683-, JM8 LW28J**# 301514-, JM8 LW28A**# 301514- (Assumed)).)
• Stop vehicle.
• Is same DTC present?
Yes
Replace PCM, then go to the next step.
No | Go to the next step.
9 | VERIFY AFTER REPAIR PROCEDURE • Perform the "After Repair Procedure". (See AFTER REPAIR PROCEDURE [AJ].) • Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [AJ] (VIN: JM0 LW10J300 301406-, JMZ LW69J7*# 307683-, JM8 LW28J**# 301514-, JM8 LW28A**# 301514- (Assumed)).)
No | Troubleshooting completed.