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P1292

Injector High Side Short To GND Or VBATT Bank 2.

  • Lincoln
  • 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

P1292 on a Lincoln means the engine control module has detected an electrical fault on the high side (supply side) of the fuel injector circuit for bank 2. The module saw the injector supply line shorted to ground or to battery voltage, so the voltage was outside the expected range. Which injectors share the affected circuit depends on the model and engine, so check the wiring information for the specific vehicle.

Symptoms

  • Malfunction indicator lamp on
  • Engine misfire or rough running, particularly on bank 2
  • Hesitation or loss of power
  • Poor fuel economy
  • Hard starting or no start
  • Engine running in a reduced-performance mode

Possible causes

  • Injector wiring chafed or damaged, shorting the high side circuit to ground or to a power supplylikely
  • Faulty fuel injector with an internal short on bank 2likely
  • Corroded, damaged or loose injector connector or harness connector terminalspossible
  • Short in the shared injector power supply circuit, such as a relay or fuse circuit faultpossible
  • Water ingress or heat damage to the harness near the enginepossible
  • Internal fault in the engine control module injector driverrare

How to diagnose

  1. Read all stored codes and freeze frame data, noting engine load, temperature and speed when the fault set, and check for other injector or misfire codes.
  2. Visually inspect the bank 2 injector harness and connectors for chafing, melted insulation, corrosion, water and bent or pushed-out terminals.
  3. Check the relevant fuses and the power supply relay feeding the injectors, referring to the wiring diagram for the model.
  4. With the engine off and the connector unplugged, measure each bank 2 injector resistance and compare with the specification for the engine.
  5. Check the injector supply circuit for a short to ground or to battery voltage using the wiring diagram, with the ECM disconnected as the procedure requires.
  6. Unplug the bank 2 injectors one at a time and see whether the fault clears or changes, to isolate a faulty injector from a wiring fault.
  7. Check the injector driver signal at the connector with a suitable meter or oscilloscope, following the model-specific procedure.
  8. If wiring and injectors test good, check the ECM power and ground supplies before suspecting the module.

How to fix

  • Repair or replace damaged injector wiring, and secure the harness away from heat and sharp edges.
  • Replace any injector that fails the resistance or electrical tests.
  • Clean or replace corroded or damaged connectors and terminals.
  • Repair the faulty injector supply circuit, fuse or relay fault found during testing.
  • Replace or repair the engine control module only after all wiring and injector faults are ruled out and the failure is confirmed.
  • Clear the codes after repair and road test to confirm the fault does not return.

Can I keep driving?

Medium severity

Short, gentle driving is possible, but fix it soon because a misfire can overheat the catalytic converter and a short could leave you without power or unable to restart. If the engine runs badly or the warning lamp flashes, stop driving and get it checked.

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

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