P0750 Code: Dodge Charger (2021-2023) - Causes, Symptoms & Fixes

No recalls found in NHTSA database

Based on the provided data for 2021–2023 Dodge Charger models, there are no NHTSA owner complaints or recalls specifically linked to DTC P0750 (Shift Solenoid A Malfunction). What follows is a comprehensive diagnostic guide using general automotive knowledge for P0750 as it applies to these Chargers, with notes on what is typical in the industry and what to test for. Data limitations: there are no official complaint statistics available here, so some real-world frequency and failure patterns cannot be cited from NHTSA data. Treat this guide as a structured starting point for diagnosis and repair planning.

CODE MEANING AND SEVERITY

• Code: P0750
• Description (generic to many Chrysler/Charger applications): Shift Solenoid A Malfunction or Shift Solenoid A Control Circuit Malfunction.
• What it means in practice: The Transmission Control Module (TCM) has detected abnormal operation of solenoid A (the solenoid that controls certain gear shifts or gear-change timing). It can be due to electrical fault, wiring, or a stuck/failed solenoid. The vehicle’s PCM/TCM may place the transmission into a fail-safe or “limp” mode to prevent further damage, often resulting in hard shifts, delayed shifts, or limited gear selection.
• Severity and risk: Moderate to high. If left unresolved, transmission behavior can worsen (erratic shifting, failure to upshift or downshift, overheating) and can lead to further mechanical wear or damage. If a limp-mode condition occurs, drivability is reduced and the vehicle may not perform as intended.

COMMON CAUSES ON DODGE CHARGER

• Electrical/controls
  • Faulty Shift Solenoid A (open, short to ground, or internal coil failure)
  • Wiring harness damage to the solenoid (frayed wires, pinched insulation, corrosion)
  • Loose, corroded, or water-damaged connectors at the solenoid or valve body
  • Transmission Control Module (TCM) or powertrain control software issues
• Fluid and valve-body related
  • Low or contaminated transmission fluid (low levels, burned, or degraded fluid)
  • Sludge/ varnish buildup in valve body that impedes solenoid operation or valve movement
  • Debris or internal wear causing imperfect valve operation
• Mechanical/wear
  • Worn solenoid seals or valve body wear
  • Internal transmission wear leading to improper pressure regulation and solenoid performance
• External/systemic
  • Temperature-related issues (overheating) affecting solenoid performance
  • Incorrect fluid specification (using a fluid not approved for the transmission)

SYMPTOMS

• Transmission shifting issues:
  • Delayed, rough, or hard upshifts and/or downshifts
  • Shifting inconsistencies or surges
  • Trans in limp mode or stuck in a lower gear (e.g., hard acceleration only in lower gears)
  • Check Engine Light (CEL) or transmission fault light on, with P0750 stored
• Driving feel:
  • Sluggish acceleration, poor performance, or harsh transitions between gears
  • Transmission may “hunt” between gears or fail to reach higher gears
• Freeze-frame data often shows the fault occurred under a load/gear condition or during a specific RPM window

DIAGNOSTIC STEPS

These steps assume basic mechanical competence and access to an advanced scan tool and standard hand tools. Always consult the vehicle’s service manual for model-specific procedures and tolerance specs.

• Step 1: Confirm the code and gather data

  • Use an advanced OBD-II scan tool to verify P0750 and check for related codes (P0751, P0752, P0753, P0700, or P0740 are commonly checked together).
  • Review freeze-frame data and the fault’s occurrence conditions (gear, RPM, load, speed, engine temp).
  • Note any transmission temperature readings, as overheating can cause or aggravate solenoid faults.

• Step 2: Inspect fluid level and condition

  • With the vehicle on level ground, check transmission fluid level per the owner’s manual (some modern automatics have a specific procedure; may require engine running with gear in Park or Neutral and temperature within a specified range).
  • Assess fluid color (reddish, not dark or burnt) and odor (burnt smell indicates fluid degradation).
  • Look for metal shavings or contamination on the dipstick or in the pan if you drop the pan later.

• Step 3: Visual and connector inspection

  • Inspect the transmission wiring harnesses to the valve body, especially the Shift Solenoid A circuit. Look for damaged insulation, pin corrosion, melted insulation, or water intrusion.
  • Disconnect and inspect the solenoid electrical connector for bent pins or corrosion. Re-seat connectors firmly.
  • Inspect for signs of oil leaks that could contaminate the solenoid area.

• Step 4: Electrical checks at the solenoid

  • Locate Shift Solenoid A (often part of the valve body assembly).
  • Check resistance of the solenoid coil with the connector unplugged (reference the factory spec in the service manual; many shift solenoids are in the 20–80 ohm range, but specs vary by model and solenoid type).
  • Confirm that a steady 12V (or battery voltage) supply is present at the solenoid when the ignition is on, and that ground is solid when commanded off.
  • Use the scan tool to command the solenoid (if supported) and observe whether the solenoid actually energizes and time-delays correctly. If the solenoid does not energize or does not drop out as commanded, replace or repair as needed.
  • Check for any TCM fault codes or software fault indicators that accompany P0750.

• Step 5: Fluid and pressure checks (if allowed by procedure)

  • If you’re equipped to safely service the valve body, consider evaluating hydraulic pressure (by a professional) or performing a pan drop to inspect the valve body and solenoid mounting.
  • Clean or replace the valve body screen if contamination is suspected (electrical solenoids can be sensitive to varnish/debris).

• Step 6: Cross-check related solenoids

  • If P0750 is present alongside P0751/P0752/P0753, these can indicate a common issue with multiple solenoids or a shared circuit. Inspect all solenoid harnesses and the install integrity.

• Step 7: Software and real-time diagnostics

  • Check for TCM/PCM software updates and calibrations from the dealer. Some software updates address shift solenoid control issues.
  • Clear codes after repairs, then road-test to verify that the condition does not return and that the solenoid is functioning properly.

• Step 8: Decide on repair path

  • If the solenoid tests out of spec or the harness is damaged, plan for solenoid replacement and/or connector repair.
  • If contamination or valve-body wear is evident, a valve-body service or solenoid replacement may be required.
  • If issues persist after electrical repair and fluid service, consider a more thorough valve-body rebuild or transmission service.

RELATED CODES

• P0751: Shift Solenoid A Performance or Stuck/Timing issue (varies by system)
• P0752: Shift Solenoid B Malfunction
• P0753: Shift Solenoid C Malfunction
• P0700: Transmission Control System Malfunction (generic), often stored with other P0xxx transmission codes
• P0740: Torque Converter Clutch Circuit Malfunction (related to hydraulic control and solenoids in some configurations)

Note: Exact meanings can vary by transmission family and model year. Always verify with the factory service information for the 2021–2023 Charger’s transmission family.

REPAIR OPTIONS AND COSTS (2025 PRICES)

Prices vary by region, shop, and whether you use OEM or aftermarket parts. The ranges below are typical and intended as a planning guide.

• Solenoid replacement (Shift Solenoid A) only

  • Parts: $15–$120
  • Labor: 1–2 hours
  • Estimated total: $180–$420

• Valve body service (solenoids replaced/cleaned, sometimes with solenoid pack)

  • Parts: $60–$350 (solenoids, gaskets, seals)
  • Labor: 3–6 hours
  • Estimated total: $500–$1,500

• Full valve-body replacement or rebuild

  • Parts: $150–$600
  • Labor: 4–8 hours
  • Estimated total: $800–$2,500

• Transmission fluid service (if contamination or routine refresh is recommended)

  • Parts: Fluid $10–$40 + filter if applicable
  • Labor: 1–2 hours
  • Estimated total: $120–$350

• Transmission replacement (rare for P0750 alone, typically only if there is persistent failure or extensive damage)

  • Parts: $1,800–$3,500 (remanufactured unit)
  • Labor: 8–14 hours
  • Estimated total: $3,500–$7,000+ (plus shop fees)

Notes:

• In many cases, P0750 is resolved by solenoid replacement or valve body service. If the solenoid is easy to access and only involves the solenoid A circuit, the cost is lower. If the valve body needs removal and rebuild, the labor cost increases considerably.
• Always request a vehicle-specific estimate that includes a diagnosis fee if applicable.

DIY VS PROFESSIONAL

• DIY considerations
  • Feasible if you have basic automotive electrical skills, a reliable jack/stands, a torque wrench, a suitable transmission jack or a safe work area, and a good scan tool with controller-/solenoid testing capability.
  • Pros: Lower upfront cost, educational experience.
  • Cons: Transmission work is intricate; improper resealing, incorrect fluid, or incomplete electrical checks can cause more damage or void warranties. Some steps require pan removal and precise reassembly.
• Professional considerations
  • Pros: Access to the correct service manuals, exact specifications (solenoid resistance, valve-body specs), guaranteed diagnostics, and proper reassembly with torque checks.
  • Cons: Higher labor costs; parts and shop rates vary.
• Safety and warranty
  • If the vehicle is under warranty or a certified program, consult the dealer. Solenoid/valve-body work may be covered if the fault is a manufacturer defect early in the service life.

PREVENTION

• Regular maintenance
  • Follow the manufacturer’s recommended transmission service interval and use the correct Dexron VI or specified fluid. Do not mix fluids.
  • Regularly inspect transmission fluid level and condition; address any leaks promptly.
• Fluid care
  • Use clean, OEM-specified fluids. Avoid low-quality or incompatible fluids that can degrade solenoids and valve body components.
  • If the vehicle frequently overheats, address cooling system issues (radiator, transmission cooler, airflow) to protect the transmission.
• Driving habits
  • Avoid aggressive shifting, heavy towing beyond rated capacity, and prolonged high-load operation that can heat the transmission.
• Electrical health
  • Keep battery and charging system healthy; voltage dips can affect solenoid operation and TCM behavior.
  • Ensure moisture intrusion is minimized in the engine bay and transmission area; seals and grommets should be in good condition.
• Software
  • Periodically check for and apply dealer-released software updates that pertain to the transmission control logic, which can correct solenoid control timing or fault detection.