P06D1 code meaning
Internal Control Module Ignition Coil Control Performance
Powertrain system Generic code P06xx codes Check engine light
What P06D1 means
On ignition systems where the coils are driven through a separate driver chip inside the engine module, P06D1 reports that this internal coil control does not work correctly. Ford checks the communication with the coil driver chip continuously and sets the code within 1 s at 200–3200 rpm, positive torque and 11–16 V. GM Europe's V6 (Saab 9-5 2.8 T) reports it as an internal engine module fault with the lamp after two trips. Misfires or rough running can follow if coils are no longer fired correctly. Primary circuit faults of individual coils are P0351–P0360, driver shorts P2300 ff. Check supply and ground, look for software updates; otherwise the module is the likely cause.
P06D1 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyHard
- Typical labor0.5 to 3 hours
- Clears after repairAfter a drive cycle
Symptoms of P06D1
- Check engine light
- Misfires or rough running
- Possibly no start
Common causes of P06D1
- Most likelyCoil driver chip or internal communication in the engine module faulty
- PossibleEngine module software
- PossibleSupply or ground problem at the module
- Less likelyShorted coil overloading the driver
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Engine control moduleIgnition coil driverIgnition coils
What each part of P06D1 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. |
| D1 | The exact fault in that area. |
What to do next
- Note P06D1 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 P06D1
What does P06D1 mean?
P06D1 means "Internal Control Module Ignition Coil Control Performance". On ignition systems where the coils are driven through a separate driver chip inside the engine module, P06D1 reports that this internal coil control does not work correctly. It is a generic code, so it means the same on every make.
Is it safe to drive with P06D1?
Usually yes, for a short time, if the check engine light is steady and the car drives normally. If the light flashes or the car runs badly, stop and have it checked.
Will P06D1 fail an emissions test?
Yes, it can. P06D1 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 P06D1 to fix?
Difficulty: hard. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P06D1 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.