P0606 on Hyundai
PCM Processor Fault
P0606 on Hyundai vehicles indicates pcm processor fault. Au7o has documented this code across 1 Hyundai model — most commonly on Venue. P0606 indicates an internal processor or performance fault within the powertrain control module (PCM) — essentially the engine's main computer has detected that one of its own internal circuits or processors is not functioning correctly. Because the PCM controls fuel, ignition, and many other functions, an internal fault can affect almost any aspect of engine operation. Symptoms range from no obvious effect to stalling, no-start, erratic running, or multiple unrelated trouble codes appearing together. This often points to the module itself, though power and ground supply issues can mimic it.
Common Causes of P0606
- •Poor power or ground supply to the PCM
- •Corroded, loose, or damaged PCM connectors
- •Low system/battery voltage or charging system fault
- •Water intrusion or corrosion at the module
- •Internal PCM hardware/processor failure
- •Failed or corrupted PCM software needing reflash
- •Wiring damage affecting the PCM power/ground circuits
P0606 on Hyundai by Model
Hyundai Venue(1 issue)
- Engine Stalling / Shut-Off When Braking or at a Stop2020-2022
Venue owners, concentrated on the 2020 model, report the engine unexpectedly shutting off, particularly while slowing or coming to a complete stop, sometimes with rough idle. Some cases are traced to a faulty or corroded wiring-harness connector near the battery causing intermittent power interruptions. CarComplaints and YourMechanic both document the slow-down/stop shut-off pattern, with stalling reported at low mileage.
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View P0606 across all makes →Frequently Asked Questions
What does P0606 mean on Hyundai?▼
P0606 stands for "PCM Processor Fault." P0606 indicates an internal processor or performance fault within the powertrain control module (PCM) — essentially the engine's main computer has detected that one of its own internal circuits or processors is not functioning correctly. Because the PCM controls fuel, ignition, and many other functions, an internal fault can affect almost any aspect of engine operation. Symptoms range from no obvious effect to stalling, no-start, erratic running, or multiple unrelated trouble codes appearing together. This often points to the module itself, though power and ground supply issues can mimic it. On Hyundai specifically, this code is documented across 1 model.
What causes P0606 on Hyundai vehicles?▼
Common causes on Hyundai: Poor power or ground supply to the PCM, Corroded, loose, or damaged PCM connectors, Low system/battery voltage or charging system fault, Water intrusion or corrosion at the module, Internal PCM hardware/processor failure. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0606 on a Hyundai?▼
Repair costs vary widely depending on the root cause and specific Hyundai model.
Which Hyundai models have P0606 documented?▼
Au7o has documented P0606 on 1 Hyundai model: Venue.