OBD-II Code · Powertrain
P0613
TCM Processor Error
Severity
high
Left alone, this one tends to take other parts with it.
Can you drive it
Not for long
Driving on this one risks further damage. Get it to a shop rather than carrying on with it.
Indicative cost (USD)
$200–$1,500
Varies by vehicle, diagnosis, parts, and local labor. This is not a repair quote.
Transmission Control Module internal processor error.
How a shop works this
Work from evidence to part, not the other way round. A code names a circuit or a symptom; it does not name the part that failed.
Note every code that is set, not just this one.
Codes that appear together usually narrow the cause faster than any one of them read alone.
Read the freeze frame — the conditions the fault was recorded under.
Cold or warm, idle or load, road speed and engine speed. A fault that only appears cold is a different fault from one that only appears under load, even with the same code on the scanner.
Confirm the fault is current rather than history.
Clear the code and see whether it returns under those same conditions. A code that does not come back may have been logged during a repair, a flat battery, or a bad connection that has since been disturbed.
Then work the likely-causes list in the order shown.
That order is what a shop checks first for this code — wiring and connections before the component they run to, because a connector costs nothing to inspect and is a common answer.
If the code comes back after a repair, the underlying fault is still there. That is the point to bring in a scanner with live data and freeze-frame, or a shop that has one.
Common symptoms
- Check engine light
- Possible limp mode
- Erratic shifting
Likely causes
- Failed TCMMost common
- Connector water intrusion
- Software issue
Read the full diagnostic procedureP0613 means the Transmission Control Module has run its internal self-test and detected an internal processor fault — RAM/ROM corruption, CPU watchdo…
P0613 means the Transmission Control Module has run its internal self-test and detected an internal processor fault — RAM/ROM corruption, CPU watchdog reset, internal A/D failure, or an internal power-supply rail out of spec. On vehicles with a standalone TCM (separate module from the PCM), this is a TCM-specific fault. On vehicles with an integrated powertrain controller (PCM controls both engine and trans), this code can set instead of or alongside P0607.
The cheapest-first ladder
- verify battery voltage at the TCM connectors with the engine running — should be 13.5-14.5V on the main power feed.
- Check for water intrusion (many TCMs mount on the transmission case itself, exposed to road splash and underhood heat).
- Pull battery power for 15+ minutes for a hard reset and re-scan — if P0613 returns immediately at next key-on, the internal fault is real.
- Verify the TCM is programmed to the correct VIN and software level (after a battery disconnect, some TCMs require a relearn drive cycle or a scan-tool reset to clear quick-learn adaptive shift data).
- Check transmission fluid level and condition — severe overheat events can damage the TCM's onboard temperature-sensing circuit and set P0613.
- Caveat: the expensive misdiagnosis is replacing the TCM ($500-$1,500 plus programming) when the actual fault is a chronic ground problem at the trans case ground or a failing alternator stressing the module.
Vehicle-specific patterns2007-2014 GM 6L80/6L90 (Silverado, Tahoe, Camaro) throws P0613 from internal TCM solder-joint failures on the externally-mounted TEHCM (transmission…
- 2007-2014GM 6L80/6L90 (Silverado, Tahoe, Camaro) throws P0613 from internal TCM solder-joint failures on the externally-mounted TEHCM (transmission electro-hydraulic control module) — heat cycling cracks the joints on the valve body harness; GM TSBs cover replacement procedures.
- 2011-2019Ford 6R140 in 6.7L Powerstroke Super Duty trucks throws P0613 from TCM water intrusion through a degraded valve body connector seal.
- 2007-2013Chrysler 545RFE/68RFE (RAM, Durango, Aspen) throws P0613 from TCM ground-strap corrosion at the transmission case.
- 2010-2017ZF 8HP-equipped BMWs throw P0613 from the integrated mechatronic unit's internal failures, often appearing after a chronic overheat event.
Estimated repair$200 (ground repair, fluid service) to $2,200 (TCM/mechatronic unit replacement plus programming).
Look up another code
P0613 — frequently asked
What does a P0613 code mean?
Transmission Control Module internal processor error.
What causes a P0613 code?
Common causes: Failed TCM; Connector water intrusion; Software issue.
What are the symptoms of a P0613 code?
Typical symptoms: Check engine light; Possible limp mode; Erratic shifting.
Is it safe to drive with a P0613 code?
Not for long. Driving on this one risks further damage. Get it to a shop rather than carrying on with it. Estimated repair: $200-$1,500.
How do I diagnose a P0613 code?
Work from evidence to part, not the other way round. A code names a circuit or a symptom; it does not name the part that failed. 1. Note every code that is set, not just this one. 2. Read the freeze frame — the conditions the fault was recorded under. 3. Confirm the fault is current rather than history. 4. Then work the likely-causes list in the order shown.
More free tools