P2020

Intake Manifold Runner Position Sensor/Switch Circuit Range/Performance Bank 2

Q: Is it safe to drive with P2020?

Usually yes. Expect at most minor power loss; it won't strand you. Repair it to restore full performance and pass emissions.

Q: Can I just clear P2020?

It will return if the runner position still doesn't match the command, so fix the sensor or sticking flaps rather than only clearing it.

Fuel & air metering (intake) Generic OBD-II Low

What it means

P2020 means the intake manifold runner position sensor on bank 2 is reporting a position that doesn't match what the engine control module expects. These runners tune airflow for torque and power, so the fault usually shows up as minor power loss or hesitation, often from sticking flaps or a misreading sensor. It does not cause a stall or no-start.

Low

Can I keep driving? Safe to drive in most cases; you may notice minor loss of power or throttle response, but it isn't a stall or no-start code.

Real-world scan data

Seen in

scans in the past year

Found in

<0.1%

of scans

<0.1%

of scans that found faults

Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.

Common symptoms

What you'll notice

Check-engine light on
Mild loss of power or hesitation
Occasional rough idle
Slightly reduced fuel economy

Common causes

Most likely first

Failed or misreading intake manifold runner position sensor (bank 2)Likely
Sticking runner flaps or seized linkage giving a position that doesn't match the commandCommon
Wiring or connector damage / high resistance in the sensor circuitCommon
Carbon buildup restricting runner movementLess often
Faulty engine control module (ECM/PCM)Less often

How to diagnose & fix

Work through it in order

Read freeze-frame data and note the commanded vs. actual runner position.
Inspect the runner flaps and linkage on bank 2 for sticking or carbon buildup; clean or free as needed.
Check the position sensor connector and wiring for damage, corrosion, or high resistance; repair as needed.
Test the position sensor's signal against spec and replace it if out of range.
If mechanicals and sensor are good, have the ECM/PCM evaluated. Clear and re-test.

FAQ

Quick answers

Is it safe to drive with P2020?+

Usually yes. Expect at most minor power loss; it won't strand you. Repair it to restore full performance and pass emissions.

Can I just clear P2020?+

It will return if the runner position still doesn't match the command, so fix the sensor or sticking flaps rather than only clearing it.

Read & clear P2020 yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play

✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX