Question # 69

A car sets P0128 (Coolant Thermostat Below Regulating Temperature). What symptom will be observed?

Options:

A.

Extended open-loop operation and poor fuel economy

B.

High NOx at cruise

C.

High HC at idle

D.

Random misfire

Viewing question 69 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.