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P2022 — Intake Manifold Runner Position Sensorswitch Circuit High Bank 2

Manufacturer-specificPowertrain (engine & transmission)

Code P2022 indicates the powertrain control module (PCM) has detected a high voltage condition on the signal circuit from the intake manifold runner position sensor for bank 2. This sensor monitors the position of the intake manifold runner flaps, which optimize airflow. A high voltage reading typically points to a short to power, an open circuit, or a faulty sensor.

Symptoms

What causes it — most likely first

1. Faulty intake manifold runner position sensor (bank 2)

The sensor itself may have failed internally, causing it to output a constant high voltage signal regardless of runner position.

2. Short to voltage in the sensor signal circuit

Wiring damage or a poor connection can cause the signal wire to contact a power source, pulling the voltage above the normal range.

3. Open circuit in the sensor wiring or connector

A broken wire, corroded terminal, or disconnected plug can cause the PCM to see a high reference voltage on the signal line.

4. Faulty intake manifold runner control actuator

If the actuator that moves the runner flaps is stuck or malfunctioning, it may cause the position sensor to read an implausible high voltage.

5. Mechanical binding of the intake manifold runner flaps

Carbon buildup or physical obstruction can prevent the flaps from moving, leading to a sensor signal that remains high.

6. PCM failure (rare)

A faulty PCM could misinterpret sensor signals, but this is extremely uncommon and should only be considered after all other causes are ruled out.

How it's diagnosed

  1. Connect a scan tool and verify the P2022 code is active; check freeze frame data for conditions when the code set.
  2. Visually inspect the intake manifold runner position sensor, actuator, and associated wiring on bank 2 for damage, corrosion, or loose connections.
  3. Using a multimeter, backprobe the sensor signal wire with the key on and engine off; compare the voltage reading to manufacturer specifications (typically 0-5V). A reading near reference voltage (5V) indicates a high signal.
  4. Check the sensor's 5V reference and ground circuits for proper voltage and continuity.
  5. Test the intake manifold runner actuator for proper operation and ensure the runner flaps move freely without binding.
  6. If all other tests pass, perform a wiggle test on the wiring harness while monitoring the signal voltage to identify intermittent faults. Only after exhaustive testing should the PCM be suspected.

Code facts & related codes

SystemPowertrain (engine & transmission)
StandardizationManufacturer-specific (P1/B1/C1/U1)
Related codesP2020 — Intake Manifold Runner Position SensorP2021 — Intake Manifold Runner Position SensorP2023 — Intake Manifold Runner Position SensorP2024 — Evap Fuel Vapor Temperature Sensor CirP2025 — Evap Fuel Vapor Temperature Sensor PerP2026 — Evap Fuel Vapor Temperature Sensor Cir

Frequently asked

What does the P2022 code mean?

It means the engine computer has detected a voltage signal from the intake manifold runner position sensor on bank 2 that is higher than the normal operating range. This sensor tells the computer the position of the intake manifold runner flaps.

Can I drive with a P2022 code?

You may be able to drive, but performance and fuel economy could be reduced. Prolonged driving with this fault may cause other issues, so it's best to diagnose and repair it promptly.

Is the PCM likely to be the cause of a P2022 code?

No, PCM failure is very rare for this code. The most common causes are a faulty sensor, wiring problems, or mechanical issues with the intake manifold runner system. The PCM should only be considered after all other possibilities have been thoroughly ruled out.

What are common mistakes when diagnosing P2022?

A common mistake is replacing the intake manifold runner position sensor without checking the wiring and connector for shorts or opens. Another is overlooking mechanical binding of the runner flaps, which can cause the sensor to read incorrectly.