P06DD on Chevrolet: How to Diagnose & Fix
Engine Oil Pressure Control Circuit Stuck Off
3 Chevrolet models · 3 documented issues · 2 critical · $2,000-$6,000 repair
P06DD on Chevrolet by model: symptoms, diagnosis and fix
GM's Active Fuel Management (AFM) system deactivates cylinders to improve fuel economy, but can cause premature lifter wear and failure. Symptoms include rough idle, misfires, and valve train noise. GM released updated lifters.
Common Symptoms
- Engine misfire codes P0300-P0308
- Rough idle
- Ticking or knocking noise
- Reduced power
- Check engine light
How to Fix
Install an AFM disabler device ($100-200) to keep all cylinders active. For failed lifters: replace with updated GM lifters and consider AFM delete kit ($300-500) which includes non-AFM lifters, valley cover, and plug. Complete repair with AFM delete runs $2,000-3,500 at a shop.
Sources for this issue (1)
The Tahoe 5.3L and 6.2L V8 engines with Active Fuel Management (AFM) use collapsible hydraulic lifters that commonly fail between 80,000-120,000 miles. Failed AFM lifters cause misfires on deactivation cylinders (1, 4, 6, 7), ticking noises, and potential camshaft and cylinder wall damage. This is the same issue affecting the Silverado and Escalade. GM issued TSB #18-NA-077 acknowledging the problem. The VLOM (Valve Lifter Oil Manifold) must be replaced along with all 16 lifters.
Common Symptoms
- Misfire codes P0300, P0301, P0304, P0306, P0307
- Ticking or tapping noise from engine
- Rough idle or engine shake
- Check engine light
- Reduced power or limp mode
- Metal debris in oil from collapsed lifter
How to Fix
Replace all 16 lifters and VLOM assembly. Many owners perform an AFM delete with non-AFM cam, lifters, and Valley cover using a Texas Speed or BTR kit. A Range Technology AFM Disabler (RA003B) can prevent AFM activation as a preventive measure on engines with good lifters. Labor is 12-18 hours.
Sources for this issue (1)
The C8 Corvette uses the LT2 6.2L V8 with Dynamic Fuel Management (DFM) which can deactivate any combination of cylinders. While the LT2 is generally reliable, some owners report lifter tick similar to the AFM issues on truck engines. The DFM system uses the same collapsible lifter technology. GM has released updated VLOM and lifter designs for the LT2. The tick is most noticeable on cold starts and usually disappears when warm. Severe cases may require lifter replacement.
Common Symptoms
- Ticking noise from engine on cold start
- Tick that goes away when engine warms up
- Rough idle briefly on startup
- Misfire codes on specific cylinders (rare)
How to Fix
Mild cold-start tick is considered normal on LT2 by many in the Corvette community. Persistent tick that does not go away when warm warrants inspection. GM has updated VLOM and lifter designs. A DFM disabler (Range Technology) can be used as a preventive measure. Full lifter replacement is rarely needed on C8.
Sources for this issue (1)
P06DD code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P06DD mean on a Chevrolet?
P06DD stands for "Engine Oil Pressure Control Circuit Stuck Off." This code applies to engines with an electronically controlled, variable oil pump, where a solenoid (oil control valve) switches the system between low- and high-pressure modes based on engine needs. 'Stuck Off' means the computer commanded the solenoid but the system did not respond, so oil pressure stays in one mode and cannot be properly regulated. This is frequently triggered by low or dirty oil, or by a stuck or sludged-up oil control valve. Symptoms can include engine noise, rough idle, reduced performance, and warning lights — and it should be addressed promptly to protect the engine. On Chevrolet it is documented across 3 models: Silverado 1500, Tahoe, Corvette.
What are the most common causes of P06DD?
The most common causes of P06DD are: Low engine oil level or dirty/sludged oil, Faulty or stuck oil pressure control solenoid (oil control valve), Clogged oil passages or solenoid screen from sludge, Wiring or connector problems at the solenoid, Faulty oil pressure sensor, Failing variable-displacement oil pump, Incorrect oil viscosity. The specific cause varies by vehicle.
How much does it cost to fix P06DD on a Chevrolet?
Published repair estimates on Chevrolet range from $2,000 to $6,000 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for P06DD on a different make?
View P06DD across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.