Challenge Your Exam Readiness With Our Free L1 Practice Questions
Question # 33
A car fails I/M with high CO and HC. Fuel trims are negative, O2 sensors show rich, and fuel pressure is 15 psi above spec. What is the likely cause?
Viewing question 33 out of 72 questions
Industry research shows that students who utilize L1 practice tests are significantly more likely to pass exam.
Our free L1 practice questions act as a diagnostic tool to give you a clear snapshot of your Automotive Service Excellence Level 1 readiness. Discover which topics are your strengths and, more importantly, which critical topics require your immediate attention.
Go to L1 Exam Main Page
L1 Overview
| Name | Automotive Service Excellence Level 1 |
| Code | L1 |
| Vendor | Skilled Trades |
| Certification | ASE |
