P2620 — Throttle Position Output Circuit/Open
powertrain (engine/transmission)
Is it safe to drive?
Drive with caution 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 to diagnose with an OBD scanner
- Read the code and freeze frame Connect an OBD2 scanner, confirm P2620 is stored, and save the freeze frame data — it shows engine conditions when the fault was detected.
- Check for companion codes and TSBs 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.
- Inspect wiring and connectors Visually inspect the wiring harness and connectors related to the throttle and intake air metering for damage, corrosion, chafing or poor contact.
- Subsystem check Inspect and clean the throttle body; check that the plate moves freely.
- Subsystem check Watch throttle position and MAF/MAP readings in live data while pressing the pedal — values should change smoothly.
- Verify the repair Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm P2620 does not return.
Approximate repair cost
Repair cost depends on which component actually failed. Typical scenarios for P2620 (parts and labor, USD, independent shop rates): Replace the MAF or MAP sensor: $150–$400; Replace the throttle body assembly: $250–$700; Clean the throttle body: $80–$200. Overall, fixing P2620 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.
Common questions
How much does it cost to fix P2620?
Replace the MAF or MAP sensor — $150–$400; Replace the throttle body assembly — $250–$700; Clean the throttle body — $80–$200. Exact cost depends on the root cause, your vehicle and local labor rates — a proper diagnosis is the cheapest first step.
What does OBD2 code P2620 mean?
Throttle Position Output Circuit/Open (P2620): 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 dirty throttle body or stuck throttle plate, intake air leaks after the MAF sensor, failed electronic throttle motor.
What is the most common cause of P2620?
The most common causes are: dirty throttle body or stuck throttle plate, intake air leaks after the MAF sensor, failed electronic throttle motor.
Is it safe to drive with P2620?
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 do I diagnose P2620 myself?
Start with a scan: confirm P2620, save the freeze frame and note any companion codes. Then inspect the wiring and connectors related to the throttle and intake air metering, and verify the suspect component against live data before buying parts.
What does P2620 mean?
Seeing P2620 on your scanner? The control unit has caught the throttle and intake air metering operating outside its calibrated window. The formal description is “Throttle Position Output Circuit/Open”, and the code is grouped under powertrain (engine/transmission) faults.
The module monitors this system continuously while driving. When readings fall outside the expected range for a defined number of drive cycles, it stores P2620 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.
Common symptoms of P2620
- Check Engine Light on
- unstable or high idle
- poor throttle response
- stalling when coming to a stop
- limp-home mode with reduced power
What causes P2620?
- wiring or connector faults in the throttle circuit
- dirty throttle body or stuck throttle plate
- contaminated or failed MAF/MAP sensor
- failed electronic throttle motor
- intake air leaks after the MAF sensor
How to diagnose P2620
- Connect an OBD2 scanner, confirm P2620 is stored, and save the freeze frame data — it shows engine conditions when the fault was detected.
- 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.
- Visually inspect the wiring harness and connectors related to the throttle and intake air metering for damage, corrosion, chafing or poor contact.
- Inspect and clean the throttle body; check that the plate moves freely.
- Watch throttle position and MAF/MAP readings in live data while pressing the pedal — values should change smoothly.
- Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm P2620 does not return.
How to fix P2620
Start with the cheapest and most common causes before replacing expensive parts:
- Replace the MAF or MAP sensor — $150–$400
- Replace the throttle body assembly — $250–$700
- Clean the throttle body — $80–$200
How much does it cost to fix P2620?
Repair cost depends on which component actually failed. Typical scenarios for P2620 (parts and labor, USD, independent shop rates):
- Replace the MAF or MAP sensor: $150–$400
- Replace the throttle body assembly: $250–$700
- Clean the throttle body: $80–$200
Overall, fixing P2620 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 P2620?
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.