P2442 on Toyota Vehicles
The bank 2 secondary air valve on a V engine doesn't seal, so exhaust pulses reach the air pump side. P2442 →
105Complaints mentioning the code
#1Rank among 2 brands
11.2%Share of Toyota DTC complaints
In NHTSA owner complaints we analyzed for Toyota, P2442 was mentioned 105 times.
Notes by brand
On the 4.7L and 5.7L V8 Tundra, Sequoia and Land Cruiser, P2440 and P2442 often appear as a pair with air pump codes. Many shops replace both valves and the pump at once, because a single-valve repair is often followed by a failure on the other bank.
Most mentioned models
| Toyota Tacoma | 85 | |
|---|---|---|
| Toyota Tundra | 19 | |
| Toyota 4runner | 1 |
Model years mentioned
Components named in these complaints
- Engine (70)
- Fuel/propulsion System (23)
- Unknown Or Other (17)
- Power Train (12)
- Vehicle Speed Control (9)
Reports with a crash: 0 · fire: 0 · injuries: 2
Often appears together with
P2440
Powertrain
The valve that should seal the air pump off from the bank 1 exhaust stays open, letting hot…
Moderate
P2441
Powertrain
The air pump runs after a cold start, but the bank 1 valve won't open – no fresh air reaches…
Low
P0412
Powertrain
The ECU found an open or short in the circuit of the valve that routes air from the pump into…
Low
P0418
Powertrain
The ECU sees a fault in the relay circuit that switches the secondary air pump on and off.
Low
Possible causes
- Bank 2 air switching valve corroded inside and not sealing
- Water drawn into the air system through the pump inlet, damaging valves on both banks
- Valve control stuck on – shorted driver, relay or air injection driver module
- Heat-damaged connector or wiring to the bank 2 valve
Related codes
Source: NHTSA Complaints API (US government open data), analyzed by DTC mention.