P2168 — Throttle/Pedal Position Sensor "F" Maximum Stop Performance

OBD2 code P2168 flags a problem with the throttle and intake air metering (throttle/pedal position sensor "F" maximum stop performance). Short, gentle driving to a shop is usually possible. Common culprits: intake air leaks after the MAF sensor, contaminated or failed MAF/MAP sensor, wiring or connector faults in the throttle circuit.

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

  1. Read the code and freeze frame Connect an OBD2 scanner, confirm P2168 is stored, and save the freeze frame data — it shows engine conditions when the fault was detected.
  2. 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.
  3. 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.
  4. Subsystem check Inspect and clean the throttle body; check that the plate moves freely.
  5. Subsystem check Watch throttle position and MAF/MAP readings in live data while pressing the pedal — values should change smoothly.
  6. Verify the repair Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm P2168 does not return.

Approximate repair cost

Repair cost depends on which component actually failed. Typical scenarios for P2168 (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 P2168 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 P2168?

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.

Will P2168 clear itself?

Sometimes P2168 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.

Is it safe to drive with P2168?

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.

What does OBD2 code P2168 mean?

OBD2 code P2168 flags a problem with the throttle and intake air metering (throttle/pedal position sensor "F" maximum stop performance). Short, gentle driving to a shop is usually possible. Common culprits: intake air leaks after the MAF sensor, contaminated or failed MAF/MAP sensor, wiring or connector faults in the throttle circuit.

What is the most common cause of P2168?

The most common causes are: intake air leaks after the MAF sensor, contaminated or failed MAF/MAP sensor, wiring or connector faults in the throttle circuit.

What does P2168 mean?

P2168 (Throttle/Pedal Position Sensor "F" Maximum Stop Performance) is stored when self-diagnostics detect abnormal readings or behaviour of the throttle and intake air metering. It belongs to the powertrain (engine/transmission) category.

To set P2168, the control module compares live readings of the throttle and intake air metering against calibrated limits, usually over several drive cycles. Alongside the code it stores a freeze frame — a snapshot of rpm, load, coolant temperature and vehicle speed at the moment of failure. Reading that snapshot first saves diagnostic time.

What causes P2168?

  • contaminated or failed MAF/MAP sensor
  • wiring or connector faults in the throttle circuit
  • intake air leaks after the MAF sensor
  • dirty throttle body or stuck throttle plate
  • faulty throttle position sensor or pedal sensor

Common symptoms of P2168

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

How to diagnose P2168

  1. Connect an OBD2 scanner, confirm P2168 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. Inspect and clean the throttle body; check that the plate moves freely.
  5. Watch throttle position and MAF/MAP readings in live data while pressing the pedal — values should change smoothly.
  6. Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm P2168 does not return.

How to fix P2168

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 P2168?

Repair cost depends on which component actually failed. Typical scenarios for P2168 (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 P2168 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 P2168?

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.

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