P216D — Fuel Injector Group "F" Supply Voltage Circuit/Open

OBD2 code P216D flags a problem with the fuel delivery and mixture control (fuel injector group "F" supply voltage circuit/open). Short, gentle driving to a shop is usually possible. Common culprits: faulty fuel pressure regulator, contaminated or incorrect fuel, weak fuel pump or clogged fuel filter.

powertrain (engine/transmission)

Is it safe to drive?

Drive with caution Drive with caution. Mixture and fuel-pressure faults can cause stalling, hesitation in traffic and — when severe — catalyst damage. Avoid long trips until diagnosed.

How to diagnose with an OBD scanner

  1. Read the code and freeze frame Connect an OBD2 scanner, confirm P216D 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 fuel delivery and mixture control for damage, corrosion, chafing or poor contact.
  4. Subsystem check Measure fuel pressure at the rail and compare with factory specification at idle and under load.
  5. Subsystem check Check short-term and long-term fuel trims in live data to see which way the mixture is off.
  6. Verify the repair Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm P216D does not return.

Approximate repair cost

Repair cost depends on which component actually failed. Typical scenarios for P216D (parts and labor, USD, independent shop rates): Replace the fuel pump: $400–$900; Clean or replace injectors: $200–$800; Replace the pressure regulator or sensor: $150–$450; Replace the fuel filter: $80–$200. Overall, fixing P216D usually costs between $80 and $900. 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 P216D?

Replace the fuel pump — $400–$900; Clean or replace injectors — $200–$800; Replace the pressure regulator or sensor — $150–$450; Replace the fuel filter — $80–$200. Exact cost depends on the root cause, your vehicle and local labor rates — a proper diagnosis is the cheapest first step.

Will P216D clear itself?

Sometimes P216D 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 is the most common cause of P216D?

The most common causes are: faulty fuel pressure regulator, contaminated or incorrect fuel, weak fuel pump or clogged fuel filter.

What does OBD2 code P216D mean?

OBD2 code P216D flags a problem with the fuel delivery and mixture control (fuel injector group "F" supply voltage circuit/open). Short, gentle driving to a shop is usually possible. Common culprits: faulty fuel pressure regulator, contaminated or incorrect fuel, weak fuel pump or clogged fuel filter.

What are the symptoms of P216D?

Drivers most often notice: rough idle and hesitation, loss of power under load, Check Engine Light on, hard starting or long cranking.

What does P216D mean?

Seeing P216D on your scanner? The control unit has caught the fuel delivery and mixture control operating outside its calibrated window. The formal description is “Fuel Injector Group "F" Supply Voltage Circuit/Open”, and the code is grouped under powertrain (engine/transmission) faults.

This code does not appear from a single bad reading: the module must see the fault condition repeat under defined operating conditions before it turns on the warning light. The freeze frame captured with P216D — engine load, rpm, temperature, speed — tells you exactly when the problem occurs, so reproduce those conditions when testing.

Common symptoms of P216D

  • rough idle and hesitation
  • loss of power under load
  • Check Engine Light on
  • hard starting or long cranking
  • fuel smell in severe cases
  • increased fuel consumption

What causes P216D?

  • weak fuel pump or clogged fuel filter
  • contaminated or incorrect fuel
  • vacuum or intake leaks skewing the mixture
  • faulty fuel pressure regulator
  • faulty fuel rail pressure sensor or wiring

How to diagnose P216D

  1. Connect an OBD2 scanner, confirm P216D 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 fuel delivery and mixture control for damage, corrosion, chafing or poor contact.
  4. Measure fuel pressure at the rail and compare with factory specification at idle and under load.
  5. Check short-term and long-term fuel trims in live data to see which way the mixture is off.
  6. Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm P216D does not return.

How to fix P216D

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

  • Replace the fuel pump — $400–$900
  • Clean or replace injectors — $200–$800
  • Replace the pressure regulator or sensor — $150–$450
  • Replace the fuel filter — $80–$200

How much does it cost to fix P216D?

Repair cost depends on which component actually failed. Typical scenarios for P216D (parts and labor, USD, independent shop rates):

  • Replace the fuel pump: $400–$900
  • Clean or replace injectors: $200–$800
  • Replace the pressure regulator or sensor: $150–$450
  • Replace the fuel filter: $80–$200

Overall, fixing P216D usually costs between $80 and $900. An accurate diagnosis before buying parts saves money — the most expensive scenario is rarely the first one to check.

Can you drive with P216D?

Drive with caution. Mixture and fuel-pressure faults can cause stalling, hesitation in traffic and — when severe — catalyst damage. Avoid long trips until diagnosed.

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