P2622 — Throttle Position Output Circuit High

Is it safe to drive with P2622?

Drive with caution. Many throttle faults put the car into limp mode with limited power — enough to reach a shop, not for highway trips. If the engine stalls or the pedal stops responding, do not drive.

How much does it cost to fix P2622?

Clean the throttle body — $80–$200; Replace the throttle body assembly — $250–$700; Replace the MAF or MAP sensor — $150–$400. Exact cost depends on the root cause, your vehicle and local labor rates — a proper diagnosis is the cheapest first step.

Will P2622 clear itself?

Sometimes P2622 clears after a few drive cycles if the fault was intermittent — for example a loose connector or a tank of bad fuel. The underlying cause usually remains, so the code tends to return. Clear it once; if it comes back, diagnose rather than erase it repeatedly.

What does OBD2 code P2622 mean?

Throttle Position Output Circuit High (P2622): a powertrain (engine/transmission) fault affecting the throttle and intake air metering. Short, gentle driving to a shop is usually possible. Most often caused by intake air leaks after the MAF sensor, dirty throttle body or stuck throttle plate, wiring or connector faults in the throttle circuit.

How do I diagnose P2622 myself?

Start with a scan: confirm P2622, save the freeze frame and note any companion codes. Then inspect the wiring and connectors related to the throttle position output, and verify the suspect component against live data before buying parts.

What does P2622 mean?

The engine control module sets P2622 when it detects a fault in the throttle and intake air metering. In practical terms: throttle position output circuit high. The code belongs to the powertrain (engine/transmission) group of OBD2 codes.

“Circuit high” means the control module sees a voltage on the throttle position output circuit that is above the expected range — typically close to battery voltage. Physically this points to a short to a power feed, a broken ground return, or a failed component pulling the signal line high.

The module monitors this system continuously while driving. When readings fall outside the expected range for a defined number of drive cycles, it stores P2622 and switches on the warning light. Freeze frame data saved with the code shows the exact conditions — rpm, load, temperature, speed — at the moment the fault was detected, which is the best starting point for diagnosis.

What causes P2622?

• signal wire shorted to battery positive
• open ground return of the throttle position output
• failed throttle position output pulling the signal high
• dirty throttle body or stuck throttle plate
• failed electronic throttle motor
• faulty throttle position sensor or pedal sensor
• contaminated or failed MAF/MAP sensor
• wiring or connector faults in the throttle circuit

Common symptoms of P2622

• stalling when coming to a stop
• poor throttle response
• limp-home mode with reduced power
• Check Engine Light on
• unstable or high idle

How to diagnose P2622

1. Connect an OBD2 scanner, confirm P2622 is stored, and save the freeze frame data — it shows engine conditions when the fault was detected.
2. Related codes often reveal the real root cause. Also check manufacturer technical service bulletins (TSB) for your make and model — many P0xxx issues have factory fixes or software updates. Search by VIN on the manufacturer site or nhtsa.gov.
3. Visually inspect the wiring harness and connectors related to the throttle and intake air metering for damage, corrosion, chafing or poor contact.
4. With the throttle position output disconnected, measure signal voltage at the harness connector: a high reading with the component unplugged indicates a short to power in the harness; if it drops to normal, the component itself is faulty.
5. Inspect and clean the throttle body; check that the plate moves freely.
6. Watch throttle position and MAF/MAP readings in live data while pressing the pedal — values should change smoothly.
7. Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm P2622 does not return.

How to fix P2622

Start with the cheapest and most common causes before replacing expensive parts:

• Clean the throttle body — $80–$200
• Replace the throttle body assembly — $250–$700
• Replace the MAF or MAP sensor — $150–$400

How much does it cost to fix P2622?

Repair cost depends on which component actually failed. Typical scenarios for P2622 (parts and labor, USD, independent shop rates):

• Clean the throttle body: $80–$200
• Replace the throttle body assembly: $250–$700
• Replace the MAF or MAP sensor: $150–$400

Overall, fixing P2622 usually costs between $80 and $700. An accurate diagnosis before buying parts saves money — the most expensive scenario is rarely the first one to check.

Can you drive with P2622?

Drive with caution. Many throttle faults put the car into limp mode with limited power — enough to reach a shop, not for highway trips. If the engine stalls or the pedal stops responding, do not drive.

Related OBD2 codes

• P2600: Coolant Pump "A" Control Circuit/Open
• P2601: Coolant Pump "A" Control Circuit Range/Performance
• P2602: Coolant Pump "A" Control Circuit Low
• P2603: Coolant Pump "A" Control Circuit High
• P2604: Intake Air Heater "A" Circuit Range/Performance
• P2605: Intake Air Heater "B" Circuit/Open