P1AEF on Chevrolet vehicles
P1AEF is named on 8 Chevrolet model years (2016–2019): 47 manufacturer filings and 1 owner report in NHTSA’s files, across Volt, Malibu.
Which Chevrolet model years name P1AEF
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2017 Chevrolet Volt | Power Train | 9 | — |
| 2016 Chevrolet Volt | Electrical System | 9 | — |
| 2018 Chevrolet Volt | Power Train | 7 | 1 |
| 2019 Chevrolet Volt | Power Train | 5 | — |
| 2017 Chevrolet Malibu | Power Train | 5 | — |
| 2016 Chevrolet Malibu | Power Train | 5 | — |
| 2018 Chevrolet Malibu | Power Train | 4 | — |
| 2019 Chevrolet Malibu | Power Train | 3 | — |
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.
What Chevrolet owners said
Source: NHTSA complaint databaseOwners’ own words, scrubbed of anything identifying. Unverified reports filed with NHTSA — what was said, not a finding that it was true.
The resulting OnStar Codes P1AEE, P1AEF, and P0AC4 indicating "the electric propulsion system is not performing as expected
Chevrolet filings that name P1AEF
Source: NHTSA manufacturer communicationsBulletins and campaigns Chevrolet filed with NHTSA whose summary names P1AEF. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- PIC6244 Service bulletin2017-01-09 · Power Train — Automatic Transmission
- This Preliminary Information communication provides information to the technician about vehicles that have a Shift to Park message on the Driver Information Center. Technician will find Diagnostic Trouble Codes P1AEE, P1AEF, P1AF0, P1AF2, and P1E22. Technician will need to replace the transmission. Technician will need to review the latest version of PIP5321 for the Volt and PIP5390 for the Malibu
- PIC6285 Service bulletin2017-06-06 · Equipment — Other — Owners/Service/Other Manual
- This Preliminary information communicates more information to help diagnoseP1AEE and P1AEF. It Gives 3 possible reason for the codes to set and areas to look.
- PIC6285A Service bulletin2017-10-11 · Electrical System — Software
- This Preliminary information communicates more information to help diagnoseP1AEE and P1AEF. It Gives 3 possible reason for the codes to set and areas to look.
- PIC6244A Service bulletin2017-10-17 · Power Train
- This Preliminary Information communication provides information to the technician about vehicles that have a Shift to Park message on the Driver Information Center. Technician will find Diagnostic Trouble Codes P1AEE, P1AEF, P1AF0, P1AF2, and P1E22. Technician will need to replace the transmission. Technician will need to review the latest version of PIP5321 for the Volt and PIP5390 for the Malibu
- PIC6285B Service bulletin2018-10-01 · Electrical System — 12V/24V/48V Battery
- This Preliminary information communicates more information to help diagnoseP1AEE and P1AEF. It Gives 3 possible reason for the codes to set and areas to look.
- PIC6244B Service bulletin2018-10-01 · Power Train — Automatic Transmission
- This Preliminary Information communication provides information to the technician about vehicles that have a Shift to Park message on the Driver Information Center. Technician will find Diagnostic Trouble Codes P1AEE, P1AEF, P1AF0, P1AF2, and P1E22. Technician will need to replace the transmission. Technician will need to review the latest version of PIP5321 for the Volt and PIP5390 for the Malibu
- PIC6244C Service bulletin2018-10-09 · Power Train
- This Preliminary Information communication provides information to the technician about vehicles that have a Shift to Park message on the Driver Information Center. Technician will find Diagnostic Trouble Codes P1AEE, P1AEF, P1AF0, P1AF2, and P1E22. Technician will need to replace the transmission. Technician will need to review the latest version of PIP5321 for the Volt and PIP5390 for the Malibu
- PIC6244D Service bulletin2019-07-09 · Power Train — Automatic Transmission
- This Preliminary Information communication provides information to the technician about vehicles that have a Shift to Park message on the Driver Information Center. Technician will find Diagnostic Trouble Codes P1AEE, P1AEF, P1AF0, P1AF2, and P1E22. Technician will need to replace the transmission. Technician will need to review the latest version of PIP5321 for the Volt and PIP5390 for the Malibu
What P1AEF means
Source: SAE J2012 / OBD-IIP1AEF 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 Chevrolet 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 P1AEF a known problem on Chevrolet vehicles?
It is a documented one: NHTSA's files hold 47 manufacturer filings and 1 owner report naming P1AEF on 8 Chevrolet model years (2016–2019). 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 Chevrolet models does P1AEF appear on most?
2017 Volt (9 documents), 2016 Volt (9 documents), 2018 Volt (8 documents).
Does P1AEF on a Chevrolet 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.