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P1292

Injector High Side Short To GND Or VBATT Bank 2.

  • Ford
  • Powertrain
  • Manufacturer code
  • Medium severity

How this code is built

P
SystemPowertrain
1
Defined byThe manufacturer
2
AreaFuel and air metering (injector circuit)
92
FaultThe specific fault in that area

What it means

On Ford models P1292 means the engine control module has detected a short on the high side (supply side) of the fuel injector circuit for bank 2. The module saw the injector high side voltage sitting at ground or at battery voltage when it should be switching normally. This is an electrical fault in the wiring, connector, injector or driver, not a fuel pressure fault.

Symptoms

  • Engine warning light on
  • Misfire or rough running, especially at idle
  • Hesitation or loss of power under load
  • Hard starting or long cranking
  • Poor fuel economy
  • Engine runs on fewer cylinders or stalls

Possible causes

  • Damaged, chafed or shorted wiring in the bank 2 injector supply circuitlikely
  • Faulty fuel injector with internal short on bank 2likely
  • Corroded, loose or water-contaminated injector or harness connectorpossible
  • Injector wiring rubbing on the engine, manifold or bracket, shorting to earth or to a live feedpossible
  • Fault in the relay or power supply feeding the injector circuitpossible
  • Internal fault in the engine control module injector driverrare

How to diagnose

  1. Read all stored codes and freeze frame data, noting engine speed, load and temperature when the fault set, and check for related misfire or injector codes
  2. Visually inspect the bank 2 injector harness and connectors for chafing, melted insulation, corrosion, moisture and bent or pushed-back pins
  3. Wiggle test the harness with the engine running to see if the fault or misfire appears and disappears
  4. Measure injector resistance at each bank 2 injector and compare with the manufacturer specification for that engine
  5. Check the injector supply voltage and earth at the connector with the ignition on, using the wiring diagram for the model
  6. Check the relevant fuses and relay and the power feed to the injector circuit
  7. Test the harness for short to earth and short to voltage between the injector connector and the control module with the module disconnected
  8. Check for a software update or technical service bulletin for the specific model and engine if all wiring and injectors test good

How to fix

  • Repair or replace the damaged section of wiring and secure it away from sharp edges and heat
  • Replace any injector that fails the resistance or electrical test
  • Clean or replace corroded or damaged connectors and terminals, and seal against moisture
  • Replace a faulty relay or repair the power supply fault to the injector circuit
  • Replace or repair the engine control module only after all wiring and injectors are proven good and the driver fault is confirmed

Can I keep driving?

Medium severity

Short, gentle driving to a garage is usually possible, but the engine may misfire or run on fewer cylinders. Avoid long journeys or heavy loads, as unburnt fuel can damage the catalytic converter and the fault may worsen or leave you stranded.

Guide written by AI from the code's definition. Confirm with a diagnosis before replacing parts.

This code for other makes

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