P062DFuel Injector Driver Circuit Performance Bank 1
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- Direct-injection injectors (petrol 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 petrol 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.
- What you may notice
- Check engine light (GM in the first trip)
- Misfires, rough running, stumbling
- Loss of power or limp mode
- Hard start or no start
- Likely causes
- 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)
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €100 – €1,800
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.