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.
Low severity. Can I keep driving?Yes, you can keep driving, though it should be repaired: the car pollutes more at startup and may not pass an inspection.
Bank 2 is the side without cylinder 1, so it only exists on V or boxer engines.
Symptoms
- Check engine lamp after cold starts
- Secondary air readiness not reached
Most likely causes
- Bank 2 pressure sensor no longer reacts
- Plug or harness on the bank 2 side damaged
- Sensor port blocked by moisture or debris
What to check, in order
Start with the simplest. You can tick off each step.
Good to know
- Repair difficulty: medium
- It affects emissions.
What each character of P2435 means
- P: Powertrain: engine and transmission
- 2: Generic code: same on every make
- 4: Emissions
- 35: Specific fault in that system
Frequently asked questions
Can I keep driving with code P2435?
Yes, you can keep driving, though it should be repaired: the car pollutes more at startup and may not pass an inspection.
What causes code P2435?
The most common causes are: bank 2 pressure sensor no longer reacts; plug or harness on the bank 2 side damaged; sensor port blocked by moisture or debris.
Related codes
- P2430AIR System Air Flow/Pressure Sensor Circuit (Bank 1)
- P2436AIR System Air Flow/Pressure Sensor Circuit Range/Performance (Bank 2)
- P2437AIR System Air Flow/Pressure Sensor Circuit Low (Bank 2)
- P2438AIR System Air Flow/Pressure Sensor Circuit High (Bank 2)
- P2439AIR System Air Flow/Pressure Sensor Circuit Intermittent/Erratic (Bank 2)
Sources
- gsi.ext.gm.com: 18OBDG03A Engine Diagnostics
- static.nhtsa.gov: MC 10138306 9999
- law.cornell.edu: 13 CCR 1968.2
Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.