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Home / DTC / P2830 — Pressure Control Solenoid K Control Circuit High

P2830 — Pressure Control Solenoid K Control Circuit High

Detailed page for trouble code P2830.

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Code

P2830

Generic P — Powertrain

Pressure Control Solenoid K Control Circuit High

Brand: Generic
Type: P — Powertrain
Views: UK: 18 EN: 20 RU: 12
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Page language: EN

Causes

  • Open or damaged wiring in the solenoid control circuit
  • Short to battery voltage in the control circuit
  • Corroded or loose connector pins at the solenoid or PCM
  • Failed pressure control solenoid (internal short/open)
  • Faulty PCM driver or internal PCM fault
  • Poor or missing ground for transmission/PCM

Symptoms

  • Transmission limp/limited-gear mode
  • Harsh, delayed, or incorrect shifting
  • Gear engagement problems or no shift into certain gears
  • Transmission warning light or MIL illuminated
  • Possible transmission pressure-related noise

What to check

  • Retrieve freeze frame and pending codes; confirm P2830 presence and note related codes
  • Visually inspect transmission wiring harness and connectors for damage, corrosion, or pin pushouts
  • Backprobe the solenoid connector and measure voltage at the control terminal with ignition ON and while commanding the solenoid
  • Measure solenoid coil resistance with connector unplugged (compare to vehicle/service spec)
  • Check for short to battery: measure voltage between control circuit and ground with circuit disconnected
  • Wiggle test wiring while monitoring live data or voltages to reproduce fault

Signal parameters

  • Supply voltage to the solenoid (reference) ≈ battery voltage (~12 V) with ignition ON
  • Typical solenoid coil resistance (varies by design) commonly ~10–60 Ω — consult vehicle spec
  • Control/driver behavior: PCM typically grounds/modulates the control circuit; when commanded ON the control circuit will drop near 0 V, when OFF it may be pulled toward battery voltage
  • Control signal may be PWM at vehicle-specific frequency (tens to a few hundred Hz) when modulated
  • A 'high' control-circuit fault means measured voltage is higher than PCM's expected threshold (open or short to battery)

Diagnostic algorithm

  1. Read and record all codes and freeze-frame data. Clear codes and do a test drive to see if P2830 returns.
  2. Perform visual inspection of harness, connectors, and transmission grounds. Repair obvious damage and retest.
  3. With ignition ON (engine OFF), backprobe the solenoid control terminal. Note resting voltage. If it reads near battery voltage with no command, suspect open driver or short to battery.
  4. Command the solenoid ON using a scan tool while monitoring the control terminal voltage. A proper driver will pull the line low or modulate it. If the voltage does not change or stays high, proceed to step 5.
  5. Remove connector and measure solenoid coil resistance at the solenoid pins. Compare to specification. If infinite or out-of-range, replace the solenoid.
  6. Check for short to battery: with harness disconnected, measure voltage between the control wire and battery positive/ground. Repair wiring if short present.
  7. Perform continuity and insulation tests of harness back to the PCM. Repair any open/short/poor connections.
  8. If wiring and solenoid are good, test/replace PCM only after confirming driver output failure per factory diagnostic procedure.
  9. After repairs, clear codes and road-test to verify proper operation and that P2830 does not return.

Likely causes

  • Connector corrosion or bent pins at the solenoid harness
  • Open or chafed wire that pulls the control circuit toward battery voltage
  • Failed solenoid with internal short/high leakage
  • PCM output stage failure (less common)

Fault status

⚠️ Status
PCM detected high voltage on Pressure Control Solenoid K control circuit; diagnostic trouble code P2830 stored. May trigger limp mode or limit transmission functions.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-2.5 hours

Similar codes

P2831 P0750 P0753 P2714 P0746
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