Fault code 16785

rickyquicky · Feb 6, 2011

Had my car on the diagnostics machine yesterday as I had engine management light on.

Came up with fault 16785 'insufficient egr exhuast flow'.

I had a new EGR a few months ago so surely it cant be that again? Anyone have any experience of this fault or can give me a few pointers?

The code was cleared and hasnt come back...yet!

I've heard it may be related to MAF sensor?

paddy · Feb 6, 2011

This is what Rosstech say...You could check the wireing conectors ??
16785/P0401/001025 - Exhaust Gas Recirculation (EGR) System: Insufficient Flow Detected

Possible Symptoms

Malfunction Indicator Light (MIL) ON
Reduced Exhaust Gas Recirculation (EGR)
Reduced Power Output/Engine running rough
Increased Emissions

Possible Causes

Exhaust Gas Recirculation (EGR) Flow restricted/clogged
Exhaust Gas Recirculation (EGR) Valve stuck closed/leaking/faulty
Wiring and/or Connector(s) from/to Exhaust Gas Recirculation (EGR) Valve faulty
Exhaust Gas Recirculation (EGR) System faulty

Possible Solutions

Check/Clean Exhaust Gas Recirculation (EGR) System
Check/Replace Exhaust Gas Recirculation (EGR) Valve
Check Wiring and/or Connector(s) from/to Exhaust Gas Recirculation (EGR) Valve

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Fault code 16785

rickyquicky

Registered User

paddy

Registered User

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