P062D code meaning
Fuel Injector Driver Circuit Performance Bank 1
Powertrain system Generic code P06xx codes Check engine light
What P062D means
Direct-injection injectors (gasoline and common-rail diesel) need a high boost voltage generated in the module to open fast; the module then holds them with pulsed battery voltage. P062D monitors this boost voltage or the shared injector supply of bank 1. GM's 2018 Duramax sets it when the internal boost voltage is above 75 V or below about 52 V, the supply line to the injectors is open or the module has an internal fault, in 14 of 20 samples at 6.25 ms, with the lamp in the first trip (2025: above 60 V or below 40 V). Ford's gasoline direct injection flags it when the opening current is not reached in time (10 s, no cylinder named), Ford's diesel when the driver chip reports a loss of high voltage (0.5 s). Injectors then open late or not at all: misfires, rough running, loss of power or no start. GM uses only P062D, also on V8s. Single injector circuits are P0201 ff.
P062D at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyHard
- Typical labor1 to 5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P062D
- Check engine light (GM in the first trip)
- Misfires, rough running, stumbling
- Loss of power or limp mode
- Hard start or no start
Common causes of P062D
- Most likelyShort in an injector high-side wire or injector collapsing the boost voltage
- PossibleModule internal (boost converter, driver chip)
- PossibleSystem undervoltage or poor ground
- PossibleHarness or injector connector (moisture, oil)
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Engine control moduleFuel injectorsInjector wiring
What each part of P062D means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 6 | Area: computer (engine control module) and output circuits. |
| 2D | The exact fault in that area. |
What to do next
- Note P062D and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P062D
What does P062D mean?
P062D means "Fuel Injector Driver Circuit Performance Bank 1". Direct-injection injectors (gasoline and common-rail diesel) need a high boost voltage generated in the module to open fast; the module then holds them with pulsed battery voltage. It is a generic code, so it means the same on every make.
Is it safe to drive with P062D?
Drive gently and only to a workshop. With P062D the car can go into limp mode (reduced power) to protect itself.
Will P062D fail an emissions test?
Yes, it can. P062D is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P062D to fix?
Difficulty: hard. A typical repair takes 1 to 5 hours of work. This is a job for a workshop.
Will P062D clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.