HE50 - DTC 1405: Inspect Upstream Pressure Hose Connections

Diagnostic Trouble Code (DTC) 1405 indicates that continuous self-test has detected the exhaust manifold side (upstream) DPFE pressure hose is off or plugged.

Possible Causes:
- Upstream pressure hose off.
- Upstream pressure hose plugged.
- Plugged or damaged pressure pickup tubes.

- Key Off.

- Inspect upstream hose at DPFE sensor and orifice tube assembly for disconnect or poor connection.

DPFE Pressure Hoses:

- Is hose off or poorly connected?

YES -- RECONNECT upstream hose or SERVICE as necessary. Complete PCM reset to clear DTCs. Clearing Diagnostic Trouble Codes

Rerun quick test. Diagnostic Subroutines (DSR) - Extracting Codes

NO -- GO to HE51. HE51 - Inspect Upstream Pressure Hose For Plugging