Question 1

What does P0606 mean?

Accepted Answer

P0606 - PCM Processor Fault. PCM internal processor has detected an error. The main computer is having an internal failure.

Question 2

What are the symptoms of P0606?

Accepted Answer

Check engine light, Multiple unrelated codes, Erratic engine behavior, Stalling, Possible no-start

Question 3

What causes P0606?

Accepted Answer

PCM internal hardware failure, Power supply voltage issues, Overheating PCM, Water intrusion, Failed reflash

Question 4

How much does it cost to fix P0606?

Accepted Answer

Typical repair cost: $500-$1,500. Usually requires PCM replacement ($500-1,000+). First check for water damage (corrosion in connector) and verify stable battery voltage.

P0606 — PCM Processor Fault

Don't guess — diagnose P0606 the right way

Common symptoms of P0606

Common causes of P0606

Repair cost & difficulty

Vehicles commonly affected

Related trouble codes