OBD Guide

P216B

Fuel Injector Group E Supply Voltage Circuit Low

P216B is an OBD-II diagnostic trouble code meaning: Fuel Injector Group E Supply Voltage Circuit Low. Common causes: open or short circuit in the injector power supply circuit, faulty injector relay. Estimated repair cost: $17–89.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Unstable engine operation
  • Dips during acceleration
  • Increased fuel consumption
  • Difficulty starting the engine
  • Check Engine Light Is On

Causes

  • Open or short circuit in the injector power supply circuit
  • Faulty injector relay
  • Blown fuse
  • Problems with the engine control unit
  • Faulty fuel injectors

How to Fix

  1. Check fuses and injector relays
  2. Inspect the wiring harness for damage
  3. Measure the voltage at the injectors
  4. Check injector resistance
  5. If necessary, replace faulty injectors

Related codes

Error P216B by Vehicle Brand

FAQ

What does the P216B code mean?

P216B is an OBD-II diagnostic trouble code that indicates: Fuel Injector Group E Supply Voltage Circuit Low

What causes a P216B error code?

The most common causes of P216B include: Open or short circuit in the injector power supply circuit; Faulty injector relay; Blown fuse; Problems with the engine control unit.

How do I fix a P216B diagnostic trouble code?

To fix P216B: Check fuses and injector relays. Inspect the wiring harness for damage. Measure the voltage at the injectors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P216B?

Yes, but get it checked soon

How much does it cost to fix P216B?

The estimated repair cost for P216B is $17–89. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat