P2436 says the bank 2 secondary air pressure reading is electrically valid but does not match what the system expects. Audi documents the code on the 2017 R8 and R8 Spyder V10: bulletin 2049142 (TSB group 01, 18-56) pairs P243600 with P243700 and has the bank 2 pressure sensor G610 replaced, following the guided fault finding. GM's 2018 tables note that the barometric-quality weighting used for P2431 also applies to P2436, but only on engines with two valves. As on bank 1, the reading is usually compared with ambient pressure with the pump off and on; a drifting sensor, a clogged sensing port or a wrong baro value can all trip it. P2431 is the bank 1 code; P2437/P2438 are the electrical faults.
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
- Often stored together with P2437
- Secondary air readiness incomplete
Most likely causes
- Bank 2 pressure sensor drifted or failed (Audi R8 replaces G610)
- Sensing port or hose on bank 2 clogged or leaking
- Wrong barometric reference value
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 P2436 means
- P: Powertrain: engine and transmission
- 2: Generic code: same on every make
- 4: Emissions
- 36: Specific fault in that system
Frequently asked questions
Can I keep driving with code P2436?
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 P2436?
The most common causes are: bank 2 pressure sensor drifted or failed (Audi R8 replaces G610); sensing port or hose on bank 2 clogged or leaking; wrong barometric reference value.
Related codes
- P2431AIR System Air Flow/Pressure Sensor Circuit Range/Performance (Bank 1)
- P2435AIR System Air Flow/Pressure Sensor Circuit (Bank 2)
- P2437AIR System Air Flow/Pressure Sensor Circuit Low (Bank 2)
- P2438AIR System Air Flow/Pressure Sensor Circuit High (Bank 2)
Sources
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.