Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Reading and Clearing Diagnostic Trouble Codes

IMPORTANT: Clear the DTCs only if the diagnostic procedure directs you to clear the DTCs. The Freeze Frame data which may help diagnose an intermiffent fault are erased when you clear the DTCs.

The PCM begins to count the warm-up cycles after the fault that caused the DTC is corrected. The PCM will automatically clear the DTC from memory after the PCM has counted 40 consecutive warm-up cycles without detecting further faults.

Use a scan tool in order to clear the DTCs. In order to clear DTCs, use the scan tool's clear the DTCs or the clear the information function. Follow the instructions that are supplied by the scan tool manufacturer.