P2515 code meaning
A/C Refrigerant Pressure Sensor B Circuit
What P2515 means
P2515 is the general circuit fault of a second refrigerant pressure sensor, called B. Heat pump systems and vehicles with electric compressors often measure pressure at several points in the circuit; which position is B is up to the maker. Audi bulletin 87 22 35 (November 2022) ties P251500 to refrigerant pressure sensor 2 (G395/G827), read by thermal management module J1024 on 2020–2022 models from A6 to Q8 and e-tron: sensors produced prior to week 31 of 2021 had failing electronics, the cabin stopped cooling, sometimes with P053000 for sensor A as well, and a revised sensor is the cure. Ford's 2014 BOSS 302S engine table lists P2515 without a lamp mark. Low, high and plausibility faults of the same sensor are P2517, P2518 and P2516. Expect weak or absent cooling.
P2515 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyMedium
- Typical labor0.5 to 2 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2515
- A/C does not cool or cools only intermittently
- Compressor stays off
- Further A/C pressure codes such as P0530 stored
Common causes of P2515
- Most likelyPressure sensor electronics failed (Audi early build sensors)
- PossibleConnector corroded or wiring to the sensor damaged
- Less likelyEvaluating module (thermal management or engine) faulty
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Ac pressure sensor bSensor wiring
What each part of P2515 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 5 | Area: vehicle speed, idle control and auxiliary inputs. |
| 15 | The exact fault in that area. |
What to do next
- Note P2515 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P2515
What does P2515 mean?
P2515 means "A/C Refrigerant Pressure Sensor B Circuit". P2515 is the general circuit fault of a second refrigerant pressure sensor, called B. It is a generic code, so it means the same on every make.
Is it safe to drive with P2515?
P2515 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will P2515 fail an emissions test?
P2515 is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is P2515 to fix?
Difficulty: medium. A typical repair takes 0.5 to 2 hours of work. This is a job for a workshop.
Will P2515 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.