
About
This app acts as an AI mechanic, interpreting OBD2 fault codes and car service history to identify likely issues. It provides guided checklists and detailed explanations, helping users understand and manage car repairs.
What's New in Pistonly
1.12
October 22, 2026
FAULT CODES, DECODED FURTHER • Manufacturer meanings for more makes: Subaru, Mitsubishi, Suzuki, Jaguar, Chrysler, Dodge and Jeep, and every manufacturer title now in your language. • A code from another tool works as typed: VAG numbers like 16684, VCDS codes and codes with a failure type such as P0300-1C. • Module codes show what kind of fault it is, how often it happened and the conditions when it was stored. • Self-tests (Mode 06) in real units, diesel readiness monitors, and an estimate of whether the car will pass an emissions inspection. FROM PISTONLY OWNERS • Turn on "Share the codes I read" and see how often a code shows up on your make, in which modules, and whether it came back after clearing. Off by default, never your VIN. • A week after you clear a code, Pistonly can remind you to read it again, so you know whether the repair held. NEW CHECKS • High-voltage battery of electric cars and hybrids: the health the car reports, plus our own cell-balance check. It is in the pre-purchase check too. • 12 V battery test: at rest, while cranking and while charging. • Tyre pressures wheel by wheel, against the recommended pressure. • Pre-purchase check: how many kilometres and warm-ups ago the codes were cleared. • Live alerts on any parameter while you drive. • A photo of a workshop receipt becomes a service-book entry. YOUR CAR IN THE CATALOG • The make and model catalog was checked against sources end to end and more than doubled: 1,131 models and 2,331 generations, including cars of the Russian and Belarusian market. • Fresh logos for every make. • Newer cars that answer only over UDS (OBD-on-UDS) are supported. AND • A clearer Pro screen: plans named by term, the yearly saving, and the price on the button. • A connection helper for when the adapter won't connect.
MoreSubscriptions & In-App Purchases
Pistonly Pro — Monthly
Unlimited AI diagnoses and every pro tool.
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FAQ
What is Pistonly?
Pistonly is an AI-powered car diagnostics app that reads OBD2 fault codes, analyzes your car's service history, and provides likely causes and repair checklists. It aims to simplify car maintenance for users.
How does Pistonly's AI diagnostician work?
You add your car by VIN, input fault codes, and the AI analyzes this data along with your service history to rank likely causes and generate a guided checklist. It learns from your input as you tick off fixes.
Can Pistonly read codes from any OBD2 scanner?
Yes, Pistonly can read fault codes from any OBD2 scanner or diagnostic report. You can also manually enter codes if you don't have an adapter.
What features are included in the free version of Pistonly?
The free version offers 3 AI analyses per month, fault-code reading with plain-English descriptions, a garage and service book, control unit browsing, live sensors, Mode 06, readiness checks, and an acceleration test.
What are the benefits of Pistonly Pro?
Pistonly Pro provides unlimited AI diagnoses, a drive log for AI sensor analysis, odometer rollback checks, service functions like actuator tests and resets, enhanced PIDs, and CSV data logging. It also supports multiple cars.
Does Pistonly have ads?
No, Pistonly does not have advertisements. The app offers a free tier with limitations and a premium subscription for full access.
What devices does Pistonly support?
Pistonly is available on iPhone and iPad devices, running on iOS.
How often is Pistonly updated?
Pistonly was last updated on July 31, 2026, with version 1.2. The release date was July 21, 2026.








