P2415 code meaning
O2 Sensor Exhaust Sample Error (Bank 2 Sensor 1)
Powertrain system Generic code P24xx codes Check engine light
What P2415 means
P2415 indicates that the upstream air-fuel sensor on bank 2 is not reading a representative exhaust sample - typically because outside air is drawn in through a leak near the sensor or the sensor is not seated correctly, so the reading is implausibly lean. VW's 2014 specification books for the Passat, CC and Touareg evaluate the sensor signal voltage against two bands, 3.70-4.81 V and a lower band of 2.51-3.00 V or 3.0-3.70 V, the band being switched with the gain factor used for the sensor characteristic. P2414 is the identical check on bank 1. CARB requires fuel-control sensors to be monitored for every parameter that affects emissions. Expect a warning light and possibly rough running and higher consumption.
P2415 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyMedium, DIY possible
- Typical labor0.5 to 3 hours
- Clears after repairAfter a drive cycle
Symptoms of P2415
- Check engine light
- Ticking exhaust noise when a leak is present
- Higher fuel consumption or uneven running
Common causes of P2415
- Most likelyExhaust leak ahead of or near the sensor (manifold, gasket, flex pipe)
- PossibleSensor loose or installed incorrectly
- PossibleAged or contaminated wide-band sensor
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Oxygen sensor bank2 sensor1Exhaust systemOxygen sensor wiring
What each part of P2415 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 4 | Area: auxiliary emission controls (catalytic converter, EGR, EVAP). |
| 15 | The exact fault in that area. |
What to do next
- Note P2415 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 P2415
What does P2415 mean?
P2415 means "O2 Sensor Exhaust Sample Error (Bank 2 Sensor 1)". P2415 indicates that the upstream air-fuel sensor on bank 2 is not reading a representative exhaust sample - typically because outside air is drawn in through a leak near the sensor or the sensor is not seated correctly, so the reading is implausibly lean. It is a generic code, so it means the same on every make.
Is it safe to drive with P2415?
Usually yes, for a short time, if the check engine light is steady and the car drives normally. If the light flashes or the car runs badly, stop and have it checked.
Will P2415 fail an emissions test?
Yes, it can. P2415 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P2415 to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P2415 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.