P0753 on 2012-2014 Kia Soul: Shift Solenoid 'A' Electrical Fault Guide

What's Unique About the 2012-2014 Kia SOUL

The 2012-2014 Kia Soul uses a 6-speed automatic transmission (A6GF1 or A6MF1) that has a well-documented high failure rate for its internal shift solenoids. The A6GF1 was specifically designed for Hyundai/Kia's smaller displacement engines, including the 1.6L and 2.0L found in the Soul. The problem is so common that Kia issued a Technical Service Bulletin (TSB #TSBTRA051R1) acknowledging that codes like P0753 are very likely due to a faulty solenoid. Crucially, the bulletin advises technicians to replace only the affected solenoids, not the entire, much more expensive, transaxle assembly.

Diagnostic Flowchart

Tap your situation to follow the diagnostic path that matches what you're seeing on this vehicle.

Generation note: The 2012-2014 range covers the end of the first generation (2010-2013) and the first year of the second generation (2014-2019). Both generations in this range used the 6-speed automatic transmission (A6GF1/A6MF1) and are susceptible to this shift solenoid failure as noted in TSB TSBTRA051R1.

Symptoms You May Notice

• Check Engine Light is on
• Transmission is stuck in one gear (fail-safe or 'limp mode', usually 3rd gear)
• Harsh, erratic, or delayed shifting
• Failure to shift into or out of a specific gear
• Poor acceleration from a stop
• Inability to use Overdrive (OD).

Most Likely Causes

1. Failed Shift Solenoid 'A' 🔴 High Probability → Shop Transmission Valve Body This is a widespread, documented failure point on Kia's 6-speed automatic transmissions. Kia's TSB (TSBTRA051R1) directly points to solenoid failure as the primary cause for P0753. The specific solenoid is often identified as OEM part number 46313-3B030.
   How to confirm: A mechanic can test the solenoid's resistance through the transmission connector. A reading outside the manufacturer's specification (typically around 10-11 ohms for this on/off solenoid) confirms failure. An open circuit 🎬 See how a mechanic tests these solenoids for resistance. (infinite resistance) or a short (very low resistance) also indicates a fault.
   Typical fix: Replace the faulty shift solenoid. This involves dropping the transmission pan and removing the valve body to access the solenoid. 🎬 Watch: Step-by-step guide to removing the transmission valve body. Many mechanics recommend replacing the entire set of 8 solenoids at once, as they are a known failure point and the labor is the same.
   Est. part cost: $40-$150 for a single solenoid, $200-$400 for a full kit.
2. Damaged Internal Wiring Harness 🟡 Medium Probability The wiring harness inside the transmission is subjected to constant heat and vibration, which can cause wires to become brittle, break, or short out over time. This is a known secondary failure point for this transmission.
   How to confirm: During solenoid replacement, the technician should visually inspect the wiring harness for any signs of damage, brittleness, or burnt connectors. Continuity tests can be performed from the main transmission connector to the solenoid connector.
   Typical fix: Replace the internal transmission wiring harness. The OEM part number is often in the format 46307-3BXXX, such as 46307-3B650, but should be verified by VIN.
   Est. part cost: $150-$350
3. Low or Dirty Transmission Fluid ⚪ Low Probability → Shop Transmission Assembly
   How to confirm: Check the transmission fluid level and condition. The fluid should be at the correct level and reddish, not brown, black, or smelling burnt. Note: These transmissions are 'sealed' and do not have a traditional dipstick, so checking the level must be done via a fill plug on the side of the transmission case.
   Typical fix: Perform a transmission fluid drain and fill. If the fluid is very dirty, a full fluid exchange may be recommended. However, on high-mileage transmissions that have not been regularly serviced, a fluid change can sometimes cause new problems.
   Est. part cost: $75-$200
4. Faulty Transmission Control Module (TCM) ⚪ Low Probability → Shop Transmission Assembly
   How to confirm: This is a diagnosis of exclusion. If the solenoid, wiring, and fluid are all confirmed to be good, the TCM may be the culprit. This requires advanced diagnostics by a professional.
   Typical fix: Replace and reprogram the Transmission Control Module.
   Est. part cost: $500-$1200.

Diagnosis Steps

1. Verify the code with an OBD-II scanner.
2. Check the transmission fluid level and condition. This must be done by a qualified person as there is no dipstick.
3. Inspect the external transmission wiring harness and connector for any visible damage, corrosion, or loose connections.
4. Using a multimeter and the vehicle's wiring diagram, test the resistance of Shift Solenoid 'A' at the transmission's main connector. Compare the reading to the manufacturer's specification (around 10-11 ohms). An open circuit (infinite resistance) or a short (very low resistance) indicates a fault.
5. If resistance is out of spec, the solenoid or internal harness is faulty. The transmission pan and valve body must be removed for further inspection.
6. Visually inspect the internal wiring harness for damage (brittle or broken wires).
7. If the solenoid and wiring test good, the issue may be with the Transmission Control Module (TCM), which requires professional diagnosis.

Parts You'll Likely Need

• Shift Solenoid 'A' (On/Off) (OEM #46313-3B030) — This is the most common failure part for code P0753 on this vehicle, as confirmed by a manufacturer TSB. This part number often covers both 'A' and 'B' solenoids.
  Trusted brands: Kia (OEM), Hyundai (OEM)
  OEM price range: $60-$150
  Aftermarket price range: $30-$100
• Transmission Solenoid Kit/Harness (OEM #46307-3B650 (Harness Only, verify by VIN)) — Often, the internal wiring harness fails along with or instead of the solenoid. Replacing the entire solenoid block or harness assembly is a common and robust repair.
  Trusted brands: Kia (OEM), Hyundai (OEM), Shinghoi
  OEM price range: $200-$400
  Aftermarket price range: $150-$300
• Transmission Pan Gasket (OEM #45282-26100) — The gasket must be replaced anytime the transmission pan is removed for service. Some models may use a form-in-place gasket sealant instead.
  Trusted brands: Kia (OEM), Fel-Pro, Mahle
  OEM price range: $20-$40
  Aftermarket price range: $10-$25
• Automatic Transmission Fluid — The fluid must be replaced after dropping the pan. Use only the specified fluid type (e.g., SP-IV) to ensure proper transmission function. Approximately 4-5 quarts are needed for a pan drop.
  Trusted brands: Kia (OEM), Idemitsu, Valvoline
  OEM price range: $15-$25 per quart
  Aftermarket price range: $8-$15 per quart

Related Codes That Often Appear With This One

• P0741 — Torque Converter Clutch Circuit Performance or Stuck Off. This and other solenoid codes are listed in the same TSB (TSBTRA051R1) and can occur due to similar solenoid or wiring harness failures.
• P0758 — Shift Solenoid 'B' Electrical. If multiple solenoid electrical codes appear together, it points more strongly toward a common problem like a faulty wiring harness or a power/ground issue rather than multiple individual solenoids failing at once.
• P0763 — Shift Solenoid 'C' Electrical. Similar to P0758, seeing this code alongside P0753 suggests a broader electrical issue within the transmission.

Technical Service Bulletins (TSBs) & Recalls

• TSBTRA051R1: Informs technicians to replace various shift solenoids on 6-speed automatic transaxles for DTCs including P0753, and explicitly advises against replacing the whole transaxle.

Platform-Specific Known Issues

• A high rate of shift solenoid failure is documented for the A6MF1/A6GF1 6-speed automatic transmission used in these vehicles.
• Kia Technical Service Bulletin TSBTRA051R1 directly addresses this code and recommends replacing the solenoids, not the entire transmission.
• The internal transmission wiring harness is also a common point of failure, sometimes failing on its own or along with the solenoids.

Mechanic-Grade Diagnostic Values

• Shift Solenoid 'A' (On/Off type) coil resistance — expected: 10 - 11 Ohms. Failure: A reading of infinity (open circuit), near zero (short circuit), or significantly outside the 10-11 Ohm range indicates a failed solenoid coil.
• Variable Force Solenoid (VFS/Linear type) coil resistance — expected: 5.1 - 5.3 Ohms. Failure: This value is for other solenoids in the valve body, not Shift Solenoid 'A'. Knowing this helps avoid misdiagnosis by applying the wrong specification.

Scan Tool Commands That Help

• Kia GDS (Global Diagnostic System): Actuation Test — To command Shift Solenoid 'A' on and off while monitoring the circuit's response. This directly tests the solenoid's functionality and the integrity of the wiring from the TCM without having to physically access the solenoid.
• Kia GDS (Global Diagnostic System): Vehicle S/W Management > Resetting Adaptive Values — After replacing solenoids or the valve body, this function should be used to clear the transmission's learned shift patterns. This ensures the TCM adapts to the new components correctly for smooth shifting.

Wiring & Ground Locations

• Transmission Control Module (TCM) — Located in the engine bay, under the battery and air cleaner assembly. On many models, it is integrated into a single unit with the Engine Control Module (ECM).. This is the source of the command and power for the shift solenoid. All electrical testing of the control circuit begins or ends at the TCM's connectors.
• Transmission Solenoid Power Feed Wires — At the main electrical connector on the transmission case. There are typically two main power sources for the solenoid group. On related Kia models, these have been identified as a green wire and an orange wire.. An electrical fault code like P0753 can be caused by a loss of the main power supply to the group of solenoids, not just a fault in the individual solenoid circuit. Verifying power at these wires is a key diagnostic step.

Real Owner Repair Stories

• AliExpress Reviewer / Kia Forte Owner (2014 Kia Forte with 6-speed automatic transmission (A6MF1 family)) — Delayed shifts, drop in fuel economy, and DTCs P0750 (Shift Solenoid A Malfunction) and P0753 (Shift Solenoid A Electrical).
  ❌ Tried (didn't work) Checking transmission fluid (level was correct and fluid was clean)., Testing solenoid resistance (measured 12.4 ohms, which was considered within spec, ruling out a simple open/short).
  ✅ What actually fixed it Despite the solenoid testing within a plausible resistance range, the owner replaced the A6MF1 shift solenoid with a new aftermarket unit, which resolved all symptoms and codes.

OEM Part Supersession History

• 46313-3B020 → 46313-3B030 — Standard part revision and improvement by the manufacturer.
  Heads up: The new part number (46313-3B030) is the correct and current replacement for the original.

Model Year Variations Within This Range

• 2012-2014: The 2012-2014 Kia Soul was available with a 1.6L Gamma engine or a 2.0L Nu engine. The 1.6L engine is typically paired with the A6GF1 transmission, while the 2.0L engine is paired with the A6MF1 transmission. While parts like the solenoids are often shared, it is critical to verify the exact transmission model when ordering parts like the internal harness or valve body.