P2435 code meaning
AIR System Air Flow/Pressure Sensor Circuit (Bank 2)
Powertrain system Generic code P24xx codes Check engine light
What P2435 means
P2435 is the bank 2 version of the basic signal fault of the secondary air pressure sensor. It exists only where each cylinder bank has its own air path with a sensor, for instance Audi's R8 V10 with the bank 2 sensor G610. GM lists P2435 among its AIR pressure sensor codes in the 2018 tables, but the detailed rows there describe engines with one air path that use only the bank 1 codes, so no threshold is published for P2435 itself. By analogy with GM's P2430, the computer would look for a frozen or missing signal while the pump runs. One pump usually feeds both banks, so a bank 2-only code points to the sensor, its plug or its wiring on that side. P2430 is the bank 1 twin.
P2435 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyMedium, DIY possible
- Typical labor0.5 to 2.5 hours
- Clears after repairAfter a drive cycle
Symptoms of P2435
- Check engine lamp after cold starts
- Secondary air readiness not reached
Common causes of P2435
- Most likelyBank 2 pressure sensor no longer reacts
- PossiblePlug or harness on the bank 2 side damaged
- Less likelySensor port blocked by moisture or debris
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Air system flow sensor b2Sai wiring
What each part of P2435 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). |
| 35 | The exact fault in that area. |
What to do next
- Note P2435 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 P2435
What does P2435 mean?
P2435 means "AIR System Air Flow/Pressure Sensor Circuit (Bank 2)". P2435 is the bank 2 version of the basic signal fault of the secondary air pressure sensor. It is a generic code, so it means the same on every make.
Is it safe to drive with P2435?
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 P2435 fail an emissions test?
Yes, it can. P2435 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 P2435 to fix?
Difficulty: medium. A typical repair takes 0.5 to 2.5 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P2435 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.