Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
DTC Test Descriptions
2000 Saturn LS1 L4-2.2L VIN FSECTION DTC Test Descriptions
The self-diagnostic tests run to determine if a subsystem has passed or failed a specified test. After a test is performed the PCM will record test PASS/FAIL criteria for display with a Scan tool. Each DTC will have three records and are as follows:
^ LAST TEST - Indicates whether the diagnostic reported a test passed or failed the last time it ran. (Even if it was not this ignition cycle.)
- POSSIBLE DISPLAY: PASSED, FAILED, NOT RAN
^ THIS IGNITION - Indicates if the diagnostic test has run this ignition cycle and the results of that test(s).
- POSSIBLE DISPLAY: PASSED, FAILED,
PASS & FAIL, NOT RAN
^ SINCE CLEAR - Indicates if diagnostic test has run since DTCs were cleared and the results of that test(s).
- POSSIBLE DISPLAY: PASSED, FAILED,
PASS & FAIL, NOT RAN.
HISTORY
^ LAST TEST - Indicates whether the diagnostic reported a test passed or failed the last time it ran. (Even if it was not this ignition cycle.)
- POSSIBLE DISPLAY: PASSED, FAILED, NOT RAN
^ THIS IGNITION - Indicates if the diagnostic test has run this ignition cycle and the results of that test(s).
- POSSIBLE DISPLAY: PASSED, FAILED,
PASS & FAIL, NOT RAN
^ SINCE CLEAR - Indicates if diagnostic test has run since DTCs were cleared and the results of that test(s).
- POSSIBLE DISPLAY: PASSED, FAILED,
PASS & FAIL, NOT RAN.
HISTORY
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.