OBD-II Code · Transmission
P2720
Pressure Control Solenoid D Control Circuit Low
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)
$300–$2,000
Varies by vehicle, diagnosis, parts, and local labor. This is not a repair quote.
Pressure solenoid D voltage low.
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
- Harsh shifts
Likely causes
- Wiring shortMost common
- Failed solenoid
Read the full diagnostic procedureP2720 means the TCM has detected an open circuit on Pressure Control Solenoid F — no current flow when the solenoid is being commanded on.
P2720 means the TCM has detected an open circuit on Pressure Control Solenoid F — no current flow when the solenoid is being commanded on. The TCM measures coil current continuously during PWM drive (Pressure Control Solenoids are typically PWM'd at 100-300 Hz to produce a variable hydraulic output), and any time commanded current is non-zero but measured current stays at zero, an open-circuit code fires.
Cheapest-first ladder
- pull the connector at the trans case (or the external solenoid pack on platforms that have one) and ohm the PCS coil — healthy reading is 8-30 ohms cold depending on application (ZF 8HP solenoids run on the lower end around 3-6 ohms; GM 6L80 PCS values are 8-12 ohms; Aisin AS69RC solenoids 5-10 ohms).
- An open coil reads OL on the meter and condemns the solenoid; an in-spec coil reading means the wiring or the TCM driver is the suspect, which is a back-probe job at the TCM harness side.
- Drive current under PWM should hit 0.5-1.5 A on a scope when the solenoid is commanded high; intermittent open with full coil resistance often points to a corroded internal pass-through connector at the case.
- Caveat: an external pressure-control solenoid swap is a $150-400 part-plus-labor job; an internal valve-body solenoid means dropping the pan ($400+ in labor before parts) and a mechatronic-style integrated unit (ZF 8HP) means a complete mechatronic rebuild at $2,000+. Confirm internal vs external BEFORE writing the estimate.
Vehicle-specific patterns2007-2014 GM 6L80/6L90 (Silverado, Tahoe, Yukon, Camaro) is the most common P2720 ticket in North American shops — the 6L80 uses multiple PCS solenoi…
- 2007-2014GM 6L80/6L90 (Silverado, Tahoe, Yukon, Camaro) is the most common P2720 ticket in North American shops — the 6L80 uses multiple PCS solenoids labeled A through F mounted on the valve body inside the pan, integrated into the TEHCM assembly; when one fails, GM's service procedure is typically a TEHCM replacement at $600-900 part plus labor.
- 2011+Ford 6R80 similarly uses multiple PCS solenoids on its lead-frame and throws P2720 alongside solenoid-pack codes when the internal harness corrodes.
- 2009+ZF 8HP electro-hydraulic mechatronic module integrates all pressure-control solenoids into a single sealed unit — P2720 on a ZF 8HP almost always means a mechatronic rebuild ($1,800-2,800) rather than a single-solenoid swap.
- 2013+Aisin AS69RC behind the Cummins 6.7L uses externally-serviceable solenoids on the valve body — pan-drop is required but individual replacement is feasible.
Estimated repair$250 to $3,200.
Look up another code
P2720 — frequently asked
What does a P2720 code mean?
Pressure solenoid D voltage low.
What causes a P2720 code?
Common causes: Wiring short; Failed solenoid.
What are the symptoms of a P2720 code?
Typical symptoms: Harsh shifts.
Is it safe to drive with a P2720 code?
Not for long. Driving on this one risks further damage. Get it to a shop rather than carrying on with it. Estimated repair: $300-$2,000.
How do I diagnose a P2720 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.
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