P026D
0 owner reports and 52 manufacturer filings across 24 model years from Cadillac, Chevrolet, GMC, Jeep and others.
Where P026D shows up
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2023 GMC Yukon | Engine | 5 | — |
| 2023 Cadillac Escalade | Engine | 4 | — |
| 2022 Cadillac Escalade | Engine | 4 | — |
| 2024 Chevrolet Suburban | Engine | 4 | — |
| 2022 Chevrolet Express | Electrical System | 3 | — |
| 2021 Chevrolet Express | Electrical System | 3 | — |
| 2020 Chevrolet Express | Engine | 3 | — |
| 2024 Cadillac Escalade | Engine | 2 | — |
| 2023 Chevrolet Suburban | Engine | 2 | — |
| 2024 Chevrolet Tahoe | Engine | 2 | — |
| 2023 Chevrolet Tahoe | Engine | 2 | — |
| 2022 GMC Savana | Electrical System | 2 | — |
| 2021 GMC Savana | Fuel/Propulsion System | 2 | — |
| 2020 GMC Savana | Fuel/Propulsion System | 2 | — |
| 2023 GMC Sierra | Engine | 2 | — |
| 2024 GMC Yukon | Engine | 2 | — |
| 2023 Jeep Gladiator | Fuel/Propulsion System | 1 | — |
| 2019 Jeep Grand Cherokee | Electrical System | 1 | — |
| 2018 Jeep Grand Cherokee | Electrical System | 1 | — |
| 2017 Jeep Grand Cherokee | Electrical System | 1 | — |
| 2016 Jeep Grand Cherokee | Electrical System | 1 | — |
| 2018 Ram 1500 | Electrical System | 1 | — |
| 2017 Ram 1500 | Electrical System | 1 | — |
| 2016 Ram 1500 | Electrical System | 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.
What it gets filed under
Manufacturer filings that name it
Source: NHTSA manufacturer communicationsService bulletins and campaigns whose filed summary names P026D. Quoting the document number at a service desk is often the fastest route to a diagnosis someone has already written down.
- PIP59772024-08-12 · Power Train
- This Preliminary information communicates to the dealer technician that DTC P026D is under investigation.Â
- 22-NA-1282024-08-09 · Fuel/Propulsion System
- This technical bulletin provides a procedure to test the intake manifold for any possible leaks that may cause the customers concern of a Malfunction Indicator Lamp (MIL) Illuminated - DTC P0172, P026D, P2459, and/or P2A00 Set.
- 25-002-24 REV. A2024-07-09 · Fuel/Propulsion System
- "Malfunction Indicator Light (MIL) Due To Possible Faulty O2 Sensor **Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs):** â—� **P026D - Fuel Injection Quantity Higher Than Expected. â—� P0133 - O2 Sensor 1/1 Slow Response.** â—� P2297 - O2 Sensor Out of Range During Deceleration B
- 24-NA-1142024-06-26 · Electrical System
- This technical bulletin provides repair information to correct a customer concern of Check Engine Lamp Illuminated with DTC P026D Set, Engine LWN Controller E98 Update.
- 22-NA-1282024-05-30 · Engine
- This technical bulletin provides a procedure to test the intake manifold for any possible leaks that may cause the customers concern of a Malfunction Indicator Lamp (MIL) Illuminated - DTC P0172, P026D, P2459, and/or P2A00 Set.
- S22180000222022-12-09 · Electrical System
- Perceived Low Power/Acceleration Lag, And/Or Malfunction Indicator Lamp (MIL) Illumination, Diagnostic Trouble Codes (DTCs) P0299 Turbocharger Underboost And/Or P026D ? Fuel Injection Quantity Higher Than Expected, Set.
What P026D means
Source: SAE J2012 / OBD-IIP026D sits in the generic range of the OBD-II standard, so it means the same thing on every vehicle sold in the United States — but WhichTrim does not carry a definition for it and will not invent one. What is on this page is the record: who named it and on what.
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 P026D
Source: NHTSA files and the OBD-II standardCan I keep driving with P026D stored?
Nobody can answer that from the code alone, and a site that does is guessing. A steady light generally means the fault was logged and the vehicle is in a reduced-risk mode; a flashing light means stop soon, because a misfiring engine can destroy a catalytic converter in minutes. 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.