OBD-II trouble code
P3497: Cylinder Deactivation System – Bank 2
Application matters: The Bank 2 name is printed in Stellantis 18-002-25 for its listed 2023 Ram 1500 5.7L eTorque application. Honda 13-055 separately uses rocker-arm oil-pressure switch C wording for P3497 in its specified 2013 Pilot cold-start case.
P3497 identifies a Bank 2 cylinder-deactivation report. Honda’s qualified high-pressure cold-start case and Ram’s qualified PCM update case show why the label alone cannot choose a switch, lifter or software repair.
Quick facts
- System
- Powertrain
- Category
- Cylinder Deactivation
- Severity
- Medium severity
- Driving guidance
- Depends on symptoms and vehicle guidance
- Repair cost range
- Get a vehicle-specific estimate after diagnosis.
- DIY difficulty
- Shop recommended
A code alone cannot establish whether driving is safe. Stop safely for a red brake or oil-pressure warning, overheating, severe misfire, stalling, or impaired braking or steering, and follow the owner's manual. Restraints faults can reduce crash protection even when the vehicle runs normally.
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What does P3497 mean?
P3497 names Cylinder Deactivation System – Bank 2 in the cited Stellantis bulletin. Preserve that bank distinction and the manufacturer’s full record. Bank 2 is not a universal far side, rear bank or fixed cylinder set, and the title does not identify a failed switch, lifter or complete engine.
For the listed 2023 Ram 1500 with the 5.7L Hemi MDS VVT eTorque engine, Stellantis 18-002-25 includes P3497 among the faults in a qualified PCM software case. It also lists misfire and other control faults; the customer may notice rough idle or misfire during warm-up. Its diagnostic instructions require related-system assessment and treatment of other faults or symptoms before the bulletin repair.
The professional PCM update in that case is not a general hardware-health finding. Another engine or a Ram outside the specified configuration needs its own diagnosis. Conversely, a demonstrated mechanical or control fault should not be dismissed merely because a software bulletin exists for the same base code.
Honda 13-055 describes a separate 2013 Pilot case. It calls P3497 a rocker-arm oil-pressure switch C report and explains how excessive oil pressure during a cold start can produce uncommanded cylinder cutout. The listed vehicle qualification and recorded pressure/temperature conditions determine whether that bulletin applies. Its matched relief-valve spring repair is not a universal switch-replacement or low-oil diagnosis.
The Honda and Ram examples should guide application matching, rather than create one combined repair sequence. Report the original warning, cold-start or warm-up behavior and service history. Preserve available event records before erasing codes; a later smooth-running engine does not explain away an earlier misfire or establish that the deactivation system is healthy.
Leave oil-pressure connections, switch manipulation, engine disassembly and programming to qualified service. Do not force a cold restart, apply throttle or attempt an activation test to make the code return. Follow warnings and arrange assistance for severe misfire, an oil-pressure warning, a flashing warning or unsafe operation. A useful quote identifies the confirmed cause, the work justified by it and the required verification without assuming a particular part or repair price.
Possible causes
- PCM software in the precisely matched Stellantis 18-002-25 case
- Excessive cold-start oil pressure in the specified Honda 13-055 application
- A different confirmed Bank 2 deactivation/control condition requiring the matched diagnosis
Symptoms
- P3497 stored with the manufacturer’s full wording and any companion reports
- Warm-up roughness or misfire in the cited Ram case if present
- Cold-start misfire in the qualified Honda case if present
Diagnostic steps
Save the full scan report, code status, and available freeze-frame data before clearing anything. Confirm the reporting module, any failure-type suffix, and the procedure for the exact vehicle. The steps below are an overview; use manufacturer specifications and safety procedures for testing.
- 1.Retain the full fault record, status and available event data, and describe symptoms that have already occurred.
- 2.Have Bank 2 and the monitored deactivation function identified from the actual engine information.
- 3.For a listed Ram, have the exact configuration, complaint and other systems assessed before applying the PCM bulletin.
- 4.For a specified 2013 Pilot, have the recorded cold-start conditions and vehicle qualification matched to Honda 13-055; its C wording is not a part-replacement command.
- 5.Obtain a professional diagnosis and itemized repair/verification plan. Leave pressure, switch, internal-engine and programming procedures to qualified service.
Repair cost
Get a vehicle-specific estimate after diagnosis.
A trouble code alone does not price the repair. Ask the shop to identify the confirmed fault and itemize diagnosis, parts, labor, programming or calibration, and taxes.
Estimate your repair
Run the numbers for your vehicle
Open the Repair Cost Estimator with vehicle-specific fault diagnosis preselected. Adjust labor rate and vehicle category to fit your situation.
Related repairs
These links are planning examples; the code does not confirm that any listed part has failed.
DIY vs shop
A qualified shop is recommended because this can involve manufacturer-grade tooling, training, or certification that most home setups do not have. Ask the technician what testing confirmed the repair.