Code 788

[irish20]

Wondering if anyone can help ?

I have a 2003 2.0 d4d e120 and i am getting a fault code coming up 788 fuel system malfunction (short)

Its intermittent and does not affect the running of the car 

No surging 

No cutting out

No power loss

Run perfectly 

Has anyone had this and if so what was the fix 

Many thanks 

[Devon Aygo]

Code 78(8) is a known issue on that generation of D4D engine subject to a TSB;

EG-0067T-0811

Subject: 1CD/1KD Lack of power and DTC 78(8), 78(2) or P0627

Models: AVENSIS; AVENSIS VERSO; COROLLA; LAND CRUISER; PREVIA; TOYOTA RAV4

Model codes: CDT220; CLM20; CDE110; CDE120; KDJ120; KDJ125; CLR30; CLA20; CLA21

INTRODUCTION This Technical Service Bulletin is to inform you of the production change and repair method for the subject concern. Applicable to vehicles produced with common rail pump with two SCV (HP2 supply pump)

DESCRIPTION OF PHENOMENON Customer may complain about lack of power or MIL “ON”. Following DTC might be triggered for DTC 78(8), 78(2) or P0627.

PRODUCTION CHANGE Diamond like coating (DLC) has been added to prevent SCV valves are sticking.

PRODUCTION CHANGE INFORMATION Not applicable, all models with HP2 supply pump are out of production.