P1913 — Transmission Pressure Circuit Solenoid Open or Short to Ground

P1913 — Transmission Pressure Circuit Solenoid Open or Short to Ground. A fault in the automatic transmission control. Short, gentle driving to a shop is usually possible. Typical causes: failed shift or pressure control solenoid, internal mechanical wear (clutches, torque converter), faulty transmission speed sensor.

For Ford vehicles

sensor a circuit

powertrain (engine/transmission)

Is it safe to drive?

Drive with caution Drive only if the transmission still shifts predictably, and avoid highway speeds. Driving with slipping or limp mode accelerates internal wear — every kilometre can add to the final repair bill.

How to diagnose with an OBD scanner

Read the code and freeze frame Connect an OBD2 scanner, confirm P1913 is stored, and save the freeze frame data — it shows engine conditions when the fault was detected.
Check for companion codes and TSBs Related codes often reveal the real root cause. Also check manufacturer technical service bulletins (TSB) for your make and model — many P0xxx issues have factory fixes or software updates. Search by VIN on the manufacturer site or nhtsa.gov.
Inspect wiring and connectors Visually inspect the wiring harness and connectors related to the automatic transmission control for damage, corrosion, chafing or poor contact.
Subsystem check Check transmission fluid level and condition — dark, burnt fluid points to internal wear.
Subsystem check Read transmission-specific codes and live data (solenoid states, input/output speed) with a capable scanner.
Verify the repair Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm P1913 does not return.

Approximate repair cost

Repair cost depends on which component actually failed. Typical scenarios for P1913 (parts and labor, USD, independent shop rates): Valve body repair or replacement: $700–$1,500; Transmission fluid service: $150–$350; Replace a shift solenoid: $300–$800; Transmission rebuild or replacement: $2,500–$5,500. Overall, fixing P1913 usually costs between $150 and $5,500. An accurate diagnosis before buying parts saves money — the most expensive scenario is rarely the first one to check.

Common questions

What does OBD2 code P1913 mean?

What is the most common cause of P1913?

The most common causes are: failed shift or pressure control solenoid, internal mechanical wear (clutches, torque converter), faulty transmission speed sensor.

Will P1913 clear itself?

Sometimes P1913 clears after a few drive cycles if the fault was intermittent — for example a loose connector or a tank of bad fuel. The underlying cause usually remains, so the code tends to return. Clear it once; if it comes back, diagnose rather than erase it repeatedly.

How do I diagnose P1913 myself?

Start with a scan: confirm P1913, save the freeze frame and note any companion codes. Then inspect the wiring and connectors related to the automatic transmission control, and verify the suspect component against live data before buying parts.

What are the symptoms of P1913?

Drivers most often notice: harsh or delayed shifting, no movement in severe cases, Check Engine or transmission warning light on, slipping between gears.

When your vehicle's computer detects a problem with the automatic transmission's pressure control system, it stores trouble code P1913. This specific OBD2 code flags an open circuit or a short to ground within the transmission pressure circuit solenoid. Essentially, the transmission control module is reporting that it cannot properly regulate hydraulic pressure through the solenoid — either the electrical path is broken or current is escaping to ground when it should not be.

The transmission control module continuously monitors solenoid operation while you drive. When sensor readings or solenoid behavior deviate from factory specifications for enough consecutive drive cycles, the module stores P1913 and illuminates the check engine or transmission warning light. The stored freeze frame data captures exactly what was happening at that moment — engine speed, load, coolant temperature, and vehicle speed — giving you a precise snapshot for diagnosis rather than guessing from symptoms alone.

P1913 falls under the powertrain category, meaning it affects either the engine, transmission, or their shared control systems. This code does not typically indicate a problem with emissions components, but transmission issues can influence overall vehicle performance and drivability.

Common Symptoms of P1913

Harsh, jerky, or noticeably delayed gear shifts during acceleration or deceleration
Complete loss of forward or reverse movement in severe cases where hydraulic pressure cannot be maintained
Illumination of the check engine light or a dedicated transmission warning indicator on the dashboard
Slippage between gears, where the engine revs without corresponding acceleration
A shuddering or vibrating sensation at highway speeds, often caused by irregular clutch engagement
Transmission stuck in a single gear, commonly called limp mode, which limits speed and acceleration

What Causes P1913?

The most frequent culprit behind P1913 is a faulty shift or pressure control solenoid itself — these electromechanical components can fail internally over time due to heat and wear. Wiring or connector problems in the valve body harness also rank high, as damaged wires, corroded terminals, or loose connections can mimic solenoid failure in the module's eyes. Valve body wear, including scored passages or worn seals, reduces hydraulic efficiency and triggers pressure-related codes. Internal mechanical issues such as worn clutches or a slipping torque converter can also generate abnormal pressure readings that the module interprets as a solenoid circuit fault. Finally, a failing transmission speed sensor may provide incorrect data to the control module, causing inappropriate solenoid commands and triggering P1913.

How to Diagnose P1913

Connect an OBD2 scanner and verify that P1913 is stored in the transmission or powertrain control module. Save the freeze frame data immediately — this records the exact operating conditions when the fault first appeared and guides your diagnostic path.
Scan for additional trouble codes in all modules. Related codes often point to the root cause, such as sensor failures or wiring issues. Check manufacturer technical service bulletins for your specific make and model — some P1913 cases have factory-issued software updates or known fixes documented online through the manufacturer or NHTSA databases.
Perform a thorough visual inspection of the transmission wiring harness and all associated connectors. Look for damaged insulation, broken wires, corrosion buildup, and pins that are bent, pushed out, or making poor contact.
Check the transmission fluid level and condition. Low fluid or fluid that appears dark, burnt, or has a strong odor indicates internal wear and contaminated fluid that should be addressed before replacing any electrical components.
Use a capable bidirectional scanner to read transmission-specific live data — monitor solenoid states, input and output speed sensor readings, and fluid temperature. Compare these values against factory specifications for your vehicle.
Clear P1913 after visual and data inspection, then drive the vehicle through a complete drive cycle that reproduces the conditions stored in the freeze frame. If P1913 returns immediately or after a few cycles, the fault is confirmed and more invasive diagnosis or parts replacement is warranted.

Repair Options and Costs for P1913

Approach repairs from the least expensive and most common causes before committing to major component replacement. Valve body repair or replacement typically runs between $700 and $1,500 including parts and labor. A transmission fluid and filter service, which addresses contamination and low fluid, costs approximately $150 to $350. Replacing a failed shift solenoid generally falls between $300 and $800 depending on vehicle accessibility and part sourcing. If internal transmission damage is confirmed, a full rebuild or replacement ranges from $2,500 to $5,500.

Total repair costs for P1913 span from as little as $150 for a fluid service up to $5,500 for complete transmission replacement. An accurate diagnosis before purchasing parts almost always saves money — the most expensive repair scenario is rarely the first place to look.

Driving Safety Verdict

P1913 carries a severity rating of caution. You may continue driving only if the transmission continues to shift predictably and no limp mode is active. Avoid high speeds and aggressive driving when this code is present. Operating the vehicle with slipping gears, harsh shifting, or restricted limp-mode operation accelerates internal wear on clutches, bands, and the torque converter. Every mile driven under these conditions can increase the final repair bill significantly. Have the issue diagnosed promptly to prevent minor problems from becoming major transmission failures.