What do DTC's in history mean?

1996 CADILLAC DEVILLE
59,000 MILES
Avatar
ONER59
  • MEMBER
  • 1 POST
PC 1520
TC 0073
RS 0027
PZ 2042
The electronic ride control is not working. Rear of car is too high and there is no dampening in front shocks.

May 13, 2012 at 12:04 AM
Advertisement
Avatar
KHLOW2008
  • ✓Experienced Mechanic
  • 41,812 POSTS
That means errors had been detected previously and stored in history. If the error did not reoccur, the currect DTC would not show them.

How did you get the trouble codes? They do not seem to be in the correct format.

May 13, 2012 at 12:26 AM
Avatar
KHLOW2008
  • ✓Experienced Mechanic
  • 41,812 POSTS
RS0027 is rear right damper solenoid valve open circuit. Could be due to a faulty solenoid valve or a break in the wiring circuit.
May 13, 2012 at 12:33 AM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle