P0605 The engine control module has failed its own internal program-memory check
1 owner report and 14 manufacturer filings across 5 model years from Hyundai, Kia, Nissan.
Where P0605 shows up
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports | Parts |
|---|---|---|---|---|
| 2016 Hyundai Sonata | Engine | 4 | 1 | |
| 2021 Kia Seltos | Engine | 3 | — | |
| 2021 Kia Soul | Equipment | 3 | — | |
| 2020 Kia Soul | Electrical System | 3 | — | Battery → |
| 2017 Nissan Titan | Equipment Adaptive/Mobility | 1 | — |
A model year appears here because the code is named in its record, not because every one of these vehicles sets it. Counts are mentions in the federal files, not failure rates — nobody publishes the denominator.
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What it gets filed under
14 manufacturer filings name P0605. Start with what the maker wrote down.
A code names the test that failed, not the part. A bulletin that names it is often a diagnosis someone has already written down — quote its number at the service desk.
Manufacturer filings that name it
Source: NHTSA manufacturer communicationsService bulletins and campaigns whose filed summary names P0605.
- TSB_ENG227_R2 Service bulletin2022-07-14 · Engine And Engine Cooling
- TECHNICAL SERVICE BULLETIN: SERVICE ACTION: MIL ON DTC P0605 AND/OR P2181 ECM LOGIC IMPROVEMENT (SA463) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides the procedure to improve the logic of the Engine Control Module (ECM) on some 2020-2021MY Soul (SK3) vehicles and 2021
- TSB_ENG227_R1 Service bulletin2022-01-13 · Electrical System — Propulsion System — Traction Battery — Thermal Management — Fluid/Coolant
- TECHNICAL SERVICE BULLETIN - SERVICE ACTION: MIL ON DTC P0605 AND/OR P2181 ECM LOGIC IMPROVEMENT (SA463) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides the procedure to improve the logic of the Engine Control Module (ECM) on some 2020-2021MY Soul (SK3) vehicles produc
- TSB_ENG227 Service bulletin2021-02-23 · Engine And Engine Cooling
- TECHNICAL SERVICE BULLETIN - SERVICE ACTION: MIL ON DTC P0605 AND/OR P2181 ECM LOGIC IMPROVEMENT (SA463) - This bulletin provides the procedure to improve the logic of the Engine Control Module (ECM) on some 2020-2021MY Soul (SK3) vehicles produced from November 24, 2018 through January 4, 2021 and 2021MY Seltos (SP2) vehicles produced from November 20, 2019 through January 12, 2021, equipped with
- NTB17-065 Service bulletin2017-06-14 · Equipment Adaptive/Mobility
- 2017 TITAN XD; MIL ON WITH DTC P0605 This bulletin applies only to vehicles equipped with a Cummins 5.0L V8 Diesel engine. IF YOU CONFIRM The MIL is ?ON? with DTC P0605 (ECM), and There are no drivability issues. ACTION 1. Save Computer Data with CONSULT-III plus (C-III plus). 2. At step 6 of the reprogramming procedure, confirm this bulletin applies to the vehicle you are working on.
- 5NP-V4R6U-09 Service bulletin2016-04-22 · Engine
- "THIS BULLETIN PROVIDES A LOGIC UPDATE AND INSPECTION FOR CEL (CHECK ENGINE LIGHT) ON WITH DTC P200A (INTAKE MANIFOLD RUNNER PERFORMANCE - BANK 1) AND FOR P0605 (ENGINE CONTROL MODULE - ROM ERROR) ON CERTAIN 2015 AND 2016 MODEL YEAR SONATA (LF) VEHICLES EQUIPPED WITH A 2.4L GDI ENGINE. THE VEHICLE MAY EXHIBIT ONE OR MORE OF THE FOLLOWING CONDITIONS: CHECK ENGINE LIGHT ON SLIGHT HESITATION OR
- 16-01-004-2 Service bulletin2016-04-01 · Engine
- VCM INSPECTION AND ECM UPDATE - DTC P200A AND P0605 (SERVICE CAMPAIGN TZ3) Description: This bulletin provides a logic update and inspection for CEL (Check Engine Light) ON with DTC P200A (Intake Manifold Runner Performance - Bank 1) and for P0605 (Engine Control Module - ROM Error) on certain 2015 and 2016 model year Sonata (LF) vehicles equipped with a 2.4L GDI engine. The vehicle may exh
What P0605 means
Source: SAE J2012 / OBD-IIThe engine control module has failed its own internal program-memory check.
A stored code names the test that failed, never the part that caused it. It is the starting point of a diagnosis, not its conclusion — the same code has several possible causes and the cheap one is not always right.
Common questions about P0605
Source: NHTSA files and the OBD-II standardCan I keep driving with P0605 stored?
Nobody can answer that from the code alone, and a site that does is guessing. A steady light means a fault was logged and the car should be checked soon; a flashing light means a severe misfire — slow down and get it seen as soon as possible, because severe misfire can quickly damage the catalytic converter. The safe read of this page is the mileage and the components, not permission.
Does a code mean the car is recalled?
No. Recalls are filed by campaign and matched by VIN, and none of them are triggered by a scan tool. If you want to know whether an open recall applies to one specific vehicle, check the VIN at nhtsa.gov/recalls — that is the only source that settles it.
Why do the counts here differ from other sites?
Because these are not estimates. Every number on this page is a count of documents in NHTSA's own files: manufacturer communications that name the code in their filed summary, and owner complaints that name it in the narrative. We do not model, weight or extrapolate them.
Will clearing the code fix it?
Clearing turns the light off and erases the freeze-frame data a technician would have used to work out what happened. If the condition is still there the code returns, usually within a few drive cycles, and the diagnosis now starts from less information than before.