How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask john -aka eauto Your Own Question
john -aka eauto
john -aka eauto, The Car Guy
Category: Cadillac
Satisfied Customers: 15038
Experience:  15 years as a auto tech
Type Your Cadillac Question Here...
john -aka eauto is online now
A new question is answered every 9 seconds

Engine light came on during road trip. NO.... just bought

Customer Question

Engine light came on during road trip.
JA: Has your vehicled stalled? Has anyone run a diagnostic test to pull the trouble code?
Customer: NO.... just bought vehicle and had checked out by a mechanic shop four days ago! Have not even used a tank of gas from dealer.
JA: What is the model/year of your Cadillac?
Customer: SRX 2013... about 37000 miles.
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: Nothing.... parked in driveway.
JA: Anything else you think the mechanic should know?
Customer: Seems to run fine.... but light on.
Submitted: 2 months ago.
Category: Cadillac
Expert:  john -aka eauto replied 2 months ago.

The check engine light comes on when the on-board computer detects a fault in engine driveability or performance, transmission control system or transmission, or the emissions system, and a fault code is set and stored in the computer. Faults that can set the check engine light can range from a vaccuum leak, engine mis-fire, low engine compression, faulty sensor such as O2 sensor or other engine sensor, hydraulic pressure loss in transmission, transmission shift solenoid, open/short in wiring harness, emission evaporative system leak, or one of over a hundred different reasons.
The only way to know what set a fault code and turned the check engine light on is to have a diagnostic scanner hooked up to the on-board computer and read it for stored diagnostic fault codes. Many auto parts stores will do this service for free- (like auto zone)check with you local parts stores. If none in your area do, then you will have to take it to a shop and pay to have the computer read for stored fault codes.

Without knowing the fault codes numbers, it would be irresponsible to guess as to the cause as there are hundreds of possible causes

if you provide me a diagnostic code we can narrow down the cause of failure

Customer: replied 2 months ago.

Related Cadillac Questions