P062D

Fuel Injector Driver Circuit Performance Bank 1

P062D is a generic OBD-II powertrain diagnostic trouble code: Fuel Injector Driver Circuit Performance Bank 1. It is logged by the engine control unit when the fuel/inj monitor detects that a specific fault threshold has been exceeded — typically resulting in the malfunction-indicator lamp (MIL / check-engine light) being illuminated.

Code
P062D
Group
Powertrain
System
Fuel/Inj
Severity
Warning (MIL on, possible limp mode)
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What P062D means

P062D is stored when the powertrain control module detects an internal performance fault related to its fuel injector control circuitry or driver outputs. The PCM continuously monitors its own injector driver stages and compares commanded versus feedback signals to ensure proper injector operation.

Modern ECMs use dedicated injector driver chips or internal ASIC circuits to produce the precise current waveforms needed for direct or port fuel injection. When the module's self-diagnostic routines detect a discrepancy in the injector driver performance that cannot be attributed to an external wiring or injector fault, P062D is flagged.

The fault may cause one or more cylinders to operate with degraded or absent fueling, leading to rough running, misfires, or power loss. In some calibrations the PCM will restrict engine operation to protect the catalytic converter and other components from damage caused by unburned fuel.

Common causes

Most-frequently reported root causes when P062D is logged.

  • 1
    Internal PCM injector driver circuit failure or degraded ASIC output stage.
  • 2
    Corrupted PCM software or calibration causing incorrect injector control parameters.
  • 3
    Intermittent PCM power supply or ground fault disrupting internal driver operation.
  • 4
    External short or overload on an injector circuit that has damaged the internal driver.
  • 5
    Failed fuel injector causing excessive current draw that stresses the internal driver.
  • 6
    PCM hardware failure requiring module replacement.
  • 7
    Wiring fault between PCM and injectors creating back-EMF or load issues.

Symptoms drivers notice

MIL illuminated with P062D stored.
Engine misfire or rough idle on one or more cylinders.
Reduced engine power or fuel economy.
Engine may exhibit hard start or extended crank time.
Misfire-related codes (P0300-P0308) may appear alongside P062D.

How to diagnose P062D

A typical diagnostic flow when this code is present.

  1. 1
    Record all DTCs and freeze frame data with a scan tool before any repairs.
  2. 2
    Check for companion misfire or injector circuit codes that may point to a specific cylinder or external fault.
  3. 3
    Inspect injector wiring harness and connectors for shorts, opens, or damaged insulation.
  4. 4
    Measure injector coil resistance on suspect cylinders and compare to specification.
  5. 5
    Check PCM supply voltage and ground integrity under load.
  6. 6
    If external circuits test within specification, update PCM software if a calibration is available for this fault.
  7. 7
    If the fault persists with no external cause found, suspect internal PCM driver failure and evaluate module replacement.

Related powertrain codes

Frequently asked questions

Can a bad injector cause P062D?

Yes. A shorted or overloaded injector can damage the PCM's internal driver, so always test injectors before replacing the PCM.

Is P062D a common code?

It is less common than external injector faults; it typically appears after an external injector or wiring fault has stressed the internal driver, or after a PCM software issue.

Will a PCM reflash fix this code?

If the root cause is a software calibration error, yes. If the internal driver hardware has failed, reprogramming will not resolve it.

How is P062D different from P0200-series injector codes?

P0200-series codes indicate faults in the external injector circuit wiring or injectors themselves, while P062D points to a fault within the PCM's internal injector control performance.

Disabling P062D in software

RaceTune can permanently disable P062D — and any other OBD-II diagnostic trouble code — on every ECU family we support. The monitor is disabled inside the ECU itself, so the fault stops being logged: the warning light stays off and the engine never enters limp mode for this code. The change is tied to your exact software version.

Permanent
The monitor is disabled in the ECU itself — not just cleared. It cannot return.
Tailored to your file
Each patch is matched to your specific software version — never a one-size-fits-all file.
Reversible
The original file is always preserved. Reflash the stock to return the ECU to factory state.

Software modifications affect emissions compliance and are not road-legal in many jurisdictions. RaceTune service files are intended for motorsport, off-road, and export use.

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