P0613 code meaning
TCM Processor
Powertrain system Generic code P06xx codes Check engine light
What P0613 means
P0613 reports an internal processor or calculation fault in the transmission control module. It is usually set by the transmission module itself – the scan tool shows which module stored it; on some architectures the engine module reports it on the transmission module's behalf. The only manufacturer document found is Subaru's bulletin for the 2022 BRZ 2.4 L automatic: an internal plausibility check (a calculated gear ratio) set P0613 falsely in rare cases, and the fix was reprogramming the transmission module with improved self-diagnosis. Depending on the maker the transmission may go into limp mode with a fixed gear and harsh shifts. Check supply, ground and battery first, then look for a software update. The engine module's processor fault is P0606; an ECM/TCM mismatch is P0614.
P0613 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0613
- Check engine light or transmission warning
- Transmission limp mode (fixed gear, harsh shifts)
- Implausible shifting
- Often no noticeable symptoms (sporadic false report)
Common causes of P0613
- Most likelyTransmission module software (self-diagnosis triggers falsely)
- PossibleVoltage dip, poor ground or supply at the transmission module
- PossibleInterrupted or faulty programming
- Less likelyInternal hardware defect (moisture, overheating)
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Transmission control moduleControl module power supply
What each part of P0613 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. |
| 13 | The exact fault in that area. |
What to do next
- Note P0613 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 P0613
What does P0613 mean?
P0613 means "TCM Processor". P0613 reports an internal processor or calculation fault in the transmission control module. It is a generic code, so it means the same on every make.
Is it safe to drive with P0613?
Drive gently and only to a workshop. With P0613 the car can go into limp mode (reduced power) to protect itself.
Will P0613 fail an emissions test?
Yes, it can. P0613 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 P0613 to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P0613 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.