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Unread 09-17-2013, 03:21 PM   #1
Dickpalmer
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Join Date: Dec 2011
Posts: 103
P1494 question.

I have a 2000 TJ 2.5. I have a P1494 code present. Leak detection pump pressure switch condition.
Explanation: ECM detected the leak detection pump switch did not change after the solenoid was energized.
Probable cause: leak detection pump defective.
Open or shorted circuit condition.
Solenoid defective.

I have already replaced the solenoid.
A lot of google searches are saying its probably a leak in a line, but this description on the printout is conflicting.
The smoke test for the lines is$90. Is there any more input on this?
Please help.

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Unread 09-17-2013, 03:25 PM   #2
Dickpalmer
Registered User
 
Join Date: Dec 2011
Posts: 103
[QUOTE="Dickpalmer"]I have a 2000 TJ 2.5. I have a P1494 code present. Leak detection pump pressure switch condition.
Explanation: ECM detected the leak detection pump switch did not change after the solenoid was energized.
Probable cause:
leak detection pump defective.
Open or shorted circuit condition.
Solenoid defective.

I have already replaced the solenoid.
A lot of google searches are saying its probably a leak in a line, but this description on the printout is conflicting. It's really leaning towards the LDP.
The smoke test for the lines is$90.
Is there any more input on this?
Please help.
Dickpalmer is offline   Reply With Quote Quick reply to this message
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