P1066 on Jeep vehicles
P1066 is named on 9 Jeep model years (2016–2020): 11 manufacturer filings and 0 owner reports in NHTSA’s files, across Renegade, Cherokee, Compass.
Which Jeep model years name P1066
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2016 Jeep Renegade | Power Train | 3 | — |
| 2020 Jeep Cherokee | Power Train | 1 | — |
| 2020 Jeep Compass | Power Train | 1 | — |
| 2020 Jeep Renegade | Electrical System | 1 | — |
| 2019 Jeep Cherokee | Power Train | 1 | — |
| 2019 Jeep Compass | Power Train | 1 | — |
| 2019 Jeep Renegade | Electrical System | 1 | — |
| 2018 Jeep Cherokee | Power Train | 1 | — |
| 2018 Jeep Compass | Electrical System | 1 | — |
A model year is listed because the code is named in its own record — a bulletin filed against it, or an owner’s complaint about it — not because every one of these vehicles sets it. Counts are documents in NHTSA’s files, not failure rates.
Jeep filings that name P1066
Source: NHTSA manufacturer communicationsBulletins and campaigns Jeep filed with NHTSA whose summary names P1066. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- 18-061-16 REV. B Service bulletin2016-08-16 · Power Train — Automatic Transmission — Control Module (Tcm/Pcm/Tecm)
- Flash: 2.4L Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following DTCs: · **P1066 - Cylinder 1 Oil Supply Solenoid Valve
- 18-061-16 REV. B Service bulletin2016-08-16 · Electrical System
- Flash: 2.4L Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following DTCs: · **P1066 - Cylinder 1 Oil Supply Solenoid Valve
- 18-061-16 Service bulletin2016-08-16 · Power Train
- Flash: 2.4L Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following DTCs: · **P1066 - Cylinder 1 Oil Supply Solenoid Valve Swi
- S2018000003 Service bulletin2020-04-03 · Power Train
- Customer complaint may include MIL/Check Engine lamp on. Upon further inspection, fault code P219A - Bank 1 Air-Fuel Ratio Imbalance may be found in the powertrain control module (PCM) as pending, active, or stored. Other fault codes P1066, P1068, P106A, or P106C (Solenoid Valve Switch Off Time Out of Range) may also be stored. Customer may also complain about loss of power or engine running rough
What P1066 means
Source: SAE J2012 / OBD-IIP1066 is a manufacturer-specific code: the second character is a 1, which under the OBD-II standard hands the definition to whoever built the vehicle. The same code can mean one thing on a Ford and something unrelated on a Hyundai. Any site that prints a single definition for it is guessing.
A stored code names the test that failed, never the part that caused it. The record above is what Jeep and its owners have filed about it; the code’s page across every make has the whole file.
Common questions
Source: NHTSA files and the OBD-II standardIs P1066 a known problem on Jeep vehicles?
It is a documented one: NHTSA's files hold 11 manufacturer filings and 0 owner reports naming P1066 on 9 Jeep model years (2016–2020). Whether it is a problem on one particular car is a diagnosis, not a count — but a bulletin that names the code on your model year is the place to start.
Which Jeep models does P1066 appear on most?
2016 Renegade (3 documents), 2020 Cherokee (1 document), 2019 Cherokee (1 document).
Does P1066 on a Jeep mean it is recalled?
No. Recalls are filed by campaign and matched by VIN; no recall is triggered by a scan tool. Check the VIN at nhtsa.gov/recalls, or open the model year's page here for the campaigns filed against it.