Check engine light code
My 2002 Jettas check engine light is on and when I scanned it it reads
''Internal module checksum error"
What does this mean and how do I fix it?
Possible causes
• Faulty Powertrain Control Module (PCM)
• Powertrain Control Module (PCM) harness is open or shorted
•Powertrain Control Module (PCM) circuit poor electrical connection
•Low battery voltage
Read more: https://www.engine-codes.com/p0601_volks...
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