DTC 18 what is it?
Administrator
Joined: Nov 1998
Posts: 71,110
From: Hell was full so they sent me to NJ
Re: DTC 18 what is it?
A fault on the fuel injector circuits. One of your injectors has an open circuit, a shorted circuit, or just enough current leakage to tell the PCM that it isn't working correctly. The PCM can't tell you which injector it is. You have to figure that out yourself.
Maybe they forgot to plug one of the injectors back in - does the engine feel like its missing on one cylinder.
Maybe they forgot to plug one of the injectors back in - does the engine feel like its missing on one cylinder.
Administrator
Joined: Nov 1998
Posts: 71,110
From: Hell was full so they sent me to NJ
Re: DTC 18 what is it?
He apparently has a 94 LT1. That's OBD-I, and the trouble codes are in the form DTC xx, where xx is a 2-digit number. There are no OBD-I PCM codes with 3-digits.
On the OBD-II PCMs, the trouble codes are in the format Pxxxx, with four numeric characters.
On the OBD-II PCMs, the trouble codes are in the format Pxxxx, with four numeric characters.
Thread
Thread Starter
Forum
Replies
Last Post
tommalcolm
Computer Diagnostics and Tuning
2
Sep 11, 2015 03:39 PM
