P0614 code meaning
ECM/TCM Incompatible
Powertrain system Generic code P06xx codes Check engine light
What P0614 means
P0614 means the software or calibration variant of the engine module does not match the fitted transmission module or transmission type, or the transmission module is not registered. CARB allows modules with several calibration variants (for example manual and automatic) to share one calibration ID only if a wrong variant turns on the lamp – exactly this check. GM's V6 engines (Saab 9-5 2010) run it continuously with ignition on and light the lamp in the first trip, also for incomplete programming; Saab's Bosch ME9 sets it when a wrong variant is programmed, without any other system reaction. Typical cases are a used module from a car with a different gearbox or a software update applied to only one of the two modules.
P0614 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium
- Typical labor0.5 to 1.5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0614
- Check engine light on
- Possibly transmission limp mode or limited shifting
- Sometimes no other symptoms
Common causes of P0614
- Most likelyEngine or transmission module replaced and not matched or registered
- PossibleUsed module with the wrong variant (different gearbox or engine)
- PossibleSoftware update on only one of the two modules
- Less likelyInternal engine module fault
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Engine control moduleTransmission control module
What each part of P0614 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. |
| 14 | The exact fault in that area. |
What to do next
- Note P0614 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 P0614
What does P0614 mean?
P0614 means "ECM/TCM Incompatible". P0614 means the software or calibration variant of the engine module does not match the fitted transmission module or transmission type, or the transmission module is not registered. It is a generic code, so it means the same on every make.
Is it safe to drive with P0614?
Drive gently and only to a workshop. With P0614 the car can go into limp mode (reduced power) to protect itself.
Will P0614 fail an emissions test?
Yes, it can. P0614 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 P0614 to fix?
Difficulty: medium. A typical repair takes 0.5 to 1.5 hours of work. This is a job for a workshop.
Will P0614 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.