P062B code meaning
Internal Control Module Fuel Injector Control Performance
Powertrain system Generic code P06xx codes Check engine light
What P062B means
P062B monitors the injector driver stage inside the engine module. On direct injection engines a separate driver chip generates the boost voltage for opening the injectors and is configured by the main processor via SPI; GM checks initialisation, boost voltage (gasoline: 90 V or more or 40 V or less), self-test, data download and communication, and sets the code in the first trip – while it is active, single injector circuit codes are suppressed. Saab's 2.0 L turbo also counts a short to ground in an injector circuit (10 s, two trips). Ford's diesel uses it as a plausibility check of the injection command (post injection, energising over 200 µs during overrun), Ford gasoline engines only with cylinder deactivation. Chrysler's 3.0 L EcoDiesel was fixed by software. Misfires, loss of power or stalling follow.
P062B at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyHard
- Typical labor0.5 to 4 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P062B
- Check engine light (GM in the first trip)
- Stumbling, misfires, loss of power
- Starting problems or stalling
- Other injector codes are not reported while P062B is active (GM)
Common causes of P062B
- PossibleShort to ground on an injector high-voltage or control wire, or a faulty injector
- PossibleEngine module software or calibration fault (update available)
- PossibleUndervoltage or supply problem (battery, main relay)
- PossibleFaulty driver chip in the engine module
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Engine control moduleInjector driverFuel injectors
What each part of P062B 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. |
| 2B | The exact fault in that area. |
What to do next
- Note P062B 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 P062B
What does P062B mean?
P062B means "Internal Control Module Fuel Injector Control Performance". P062B monitors the injector driver stage inside the engine module. It is a generic code, so it means the same on every make.
Is it safe to drive with P062B?
Drive gently and only to a workshop. With P062B the car can go into limp mode (reduced power) to protect itself.
Will P062B fail an emissions test?
Yes, it can. P062B 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 P062B to fix?
Difficulty: hard. A typical repair takes 0.5 to 4 hours of work. This is a job for a workshop.
Will P062B clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.