1994 Jaguar Vanden Plas fuel failure23

Tiny
ENLIGHTEND1
  • MEMBER
  • 1994 JAGUAR VANDEN PLAS
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 122,000 MILES
I, m wondering if you know what fuel failure23 is? My check engine light came on, when I press the vcm it say I have a fuel failure23. Thank you
Tuesday, July 21st, 2009 AT 12:27 AM

1 Reply

Tiny
DAVE H
  • MECHANIC
  • 13,384 POSTS
DTC 23: FUEL CONTROL, RUNNING RICH
If EVAP canister purge control valve has an electrical signal, go to DTC 89. If no electrical signal is present, check fuel pressure at idle. Fuel pressure should be 36.3 psi (2.5 kg/cm2 ) with vacuum hose connected to fuel pressure regulator, or 43.5 (3.0 kg/cm2 ) with vacuum hose disconnected.
If fuel pressure is incorrect, check fuel pressure return line for blockage. Check vacuum signal if fuel pressure is high with vacuum hose connected. If necessary, replace fuel pressure regulator.
If fuel pressure is okay, check for leaking fuel injector and DTC 34. Check mass airflow sensor. Repair or replace as necessary
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Friday, November 27th, 2009 AT 7:14 AM

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