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Diagnostic Procedure
=NGEC0238
1 CHECK HOSE
Check vacuum hose for clogging and improper connection.
OK or NG
OK 䊳 GO TO 2.
NG 䊳 Repair or replace vacuum hose.
2 CHECK EXHAUST SYSTEM
Check exhaust system for collapse.
OK or NG
OK 䊳 GO TO 3.
NG 䊳 Repair or replace exhaust system.
3 CHECK ORIFICE
Check if orifice is installed in vacuum hose between EGRC-BPT valve and EGRC-solenoid valve.
OK or NG
OK 䊳 GO TO 4.
NG 䊳 Replace vacuum hose.
4 CHECK EGRC-BPT VALVE
1. Plug one of two ports of EGRC-BPT valve.
2. Vacuum from the other port and check leakage without applying any pressure from under EGR-BPT valve.
Leakage should exist.
SEF172P
OK or NG
OK 䊳 GO TO 5.
NG 䊳 Replace EGRC-BPT valve.
DTC P0402 EGRC-BPT VALVE FUNCTION
KA24DE
Diagnostic Procedure
EC-342
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