OBD-II Code
P2718
Severity
Not yet reviewed
Nobody on our side has assessed this code yet, so we are not going to guess at how serious it is.
Can you drive it
We cannot say
Treat it as unknown until a shop reads it with live data. If the check-engine light is FLASHING, stop driving as soon as it is safe to — that means an active misfire, whatever the code.
Indicative cost (USD)
$250–$2,200
From this code's diagnostic notes. Varies by vehicle, diagnosis, parts, and local labor. This is not a repair quote.
P2718 is the high-side complement to P2717 — Pressure Control Solenoid D control circuit HIGH, meaning the TCM driver is seeing the solenoid command line pulled to battery voltage (or floating high) when it should be PWM-cycling under command.
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 follow the diagnostic notes further down this page, in the order they are written.
They are written in the order a shop works this code, cheapest checks first. Where they name a component, inspect its wiring and connector before replacing it.
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
Read the full diagnostic procedureP2718 is the high-side complement to P2717 — Pressure Control Solenoid D control circuit HIGH, meaning the TCM driver is seeing the solenoid command…
P2718 is the high-side complement to P2717 — Pressure Control Solenoid D control circuit HIGH, meaning the TCM driver is seeing the solenoid command line pulled to battery voltage (or floating high) when it should be PWM-cycling under command.
The fault modes are
the solenoid coil is internally open (the winding has broken and the driver sees no load), the harness wire from the TCM to the solenoid is open (broken or unplugged at the case connector or at a splice), the harness wire is shorted to a 12V power source (uncommon but possible if a chafe puts the PCS line against a battery feed in the engine bay), or the TCM driver has failed open on that channel. A healthy PCS-D coil reads 8-30 ohms; an open coil reads infinite resistance on a meter. Cheapest-first ladder: with the harness reconnected, scope or DVOM the TCM driver pin during a commanded lockup — a healthy driver pulses 0V to 12V, an open-circuit fault sits at 12V (pulled high by the internal pull-up in the driver IC) and never drops; disconnect the harness at the trans case connector and measure resistance through the harness side from the connector pin back to the TCM pin (should be near 0 ohms — a high reading or open means a broken harness wire); pull the trans pan and inspect the internal lead-frame for cracks at the bend points and the connector for pin-fret; check coil resistance directly at the solenoid terminals after removing it (infinite resistance confirms open coil); inspect the case-connector pass-through for fluid intrusion that corroded a pin off the lead-frame. Before condemning a complete solenoid pack on a P2718, ALWAYS isolate whether the open is in the coil, the lead-frame, or the external harness — a broken external harness wire at the case-connector pin is a 30-minute repair on a Ford 6R80, while a broken lead-frame inside the pan is a full solenoid-pack or valve-body service for many hours of labor.
Vehicle-specific patterns2011-2017 Ford F-150/Expedition/Mustang 6R80 throws P2718 from PCS coil winding failure (open-circuit) and from lead-frame fracture at the bend over…
- 2011-2017Ford F-150/Expedition/Mustang 6R80 throws P2718 from PCS coil winding failure (open-circuit) and from lead-frame fracture at the bend over the valve body — same population that throws P2717 on the short-side, just the opposite failure mode on the same component family.
- 2013-2018Ram 2500/3500 Aisin AS69RC throws P2718 from internal harness break in the trans pan and from solenoid coil aging; AS69RC solenoid replacement is usually done as a full pack rather than individual solenoids because labor dominates.
- 2008-2014GM 6L80/6L90 throws P2718 from PCS coil open-circuit failure and from case-connector pin-fret on high-mileage trucks — the pin-fret signature is intermittent codes (P2718 sets, clears, resets after a few drive cycles) that progress to hard-fault.
- 2009-2014Chrysler 545RFE/65RFE throws P2718 from solenoid pack coil failure.
- 2007-2013BMW ZF6HP/ZF8HP throws P2718 from mechatronic-internal solenoid coil failure, requiring mechatronic replacement or rebuild.
Estimated repair$250 to $2,200.
Look up another code
More free tools