HO2S Sensor Circuit Malfunction (HO2S-11) During testing the HO2S Heaters are checked for opens/shorts and excessive current draw.
The test fails when current draw exceeds a calibrated limit and/or an open or short is detected. Short to VPWR in harness or HO2S. Water in harness connector. Open VPWR circuit. Open GND circuit. Low battery voltage. Corrosion or poor mating terminals and wiring Damaged HO2S heater. Damaged PCM.
One example of this would be when an automatic vehicle in placed in gear. To prevent the added drag from the torque converter and transmission from reducing the idling speed, the PCM will command the idle control valve to allow more air to enter the engine, while at the same time, adjusting the injector pulse width to inject more fuel to suit the increased amount of air. Note that the idle air control valve is closed by the PCM when the throttle plate is opened to prevent excess air from entering the engine.
Difficulty Level (Expert)
![]() |
Repair Time (35 Min.)
![]() |
Cost Prediction : $ 40-75 |
If your p229d fuel pressure regulator 2 exceeded learning limits - too high check engine light is illuminated, it's best to take it in for diagnostic testing, which can feel like a hassle. Because while the lights vary in appearance from vehicle to vehicle, all have the same basic meaning: There's a problem with the car's emissions system. The on-board diagnostics system P229D and engine control unit are in charge of monitoring a bunch of different p229d fuel pressure regulator 2 exceeded learning limits - too high, and if they get a reading that's a little out of whack, up pops the check engine light.
![]() |
P229D is a kind of Powertrain Trouble Code
Powertrain of a modern automobile, comprising engine (with exhaust system), transmission, drive shaft, suspension and the wheels. In a motor vehicle, the term powertrain or powerplant describes the main components that generate power and deliver it to the road surface, water, or air. |
You can view according P229D DTC for your car model. We selected several models to see obd2 solutions click and view it.
+P229D Seat Salsa | +P229D Vauxhall Meriva A | +P229D Nsu Ro80 | +P229D Fairthorpe Em | +P229D Armstrong Siddeley Hurricane |