P1914 — Trans Temp Sensor Circuit Open or Shorted to Pwr or Gnd

P1914 — Trans Temp Sensor Circuit Open or Shorted to Pwr or Gnd. A fault in the sensor and actuator circuits. The car is usually drivable while you plan the repair. Typical causes: corroded, loose or damaged connector, blown fuse feeding the circuit, faulty sensor or actuator of the affected circuit.

For Ford vehicles

sensor a circuit

powertrain (engine/transmission)

Is it safe to drive?

Short-term driving is OK In most cases the car remains drivable, possibly with reduced performance or a disabled auxiliary system. If symptoms include stalling, no-start or brake/steering warnings, treat it as urgent.

How to diagnose with an OBD scanner

Read the code and freeze frame Connect an OBD2 scanner, confirm P1914 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 trans temp sensor circuit open or shorted to pwr or gnd for damage, corrosion, chafing or poor contact.
Subsystem check Measure reference voltage, ground and signal continuity at the component connector.
Subsystem check Wiggle-test the harness while watching the signal in live data — dropouts reveal broken wires.
Verify the repair Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm P1914 does not return.

Approximate repair cost

Repair cost depends on which component actually failed. Typical scenarios for P1914 (parts and labor, USD, independent shop rates): Repair wiring or connectors: $80–$250; Control module repair: $300–$1,000; Replace the faulty sensor or actuator: $150–$500. Overall, fixing P1914 usually costs between $80 and $1,000. An accurate diagnosis before buying parts saves money — the most expensive scenario is rarely the first one to check.

Common questions

Will P1914 clear itself?

Sometimes P1914 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.

What does OBD2 code P1914 mean?

How much does it cost to fix P1914?

Repair wiring or connectors — $80–$250; Control module repair — $300–$1,000; Replace the faulty sensor or actuator — $150–$500. Exact cost depends on the root cause, your vehicle and local labor rates — a proper diagnosis is the cheapest first step.

What are the symptoms of P1914?

Drivers most often notice: possible limp mode depending on the affected component, Check Engine Light on, increased fuel consumption in some cases, the affected system operates intermittently or not at all.

Is it safe to drive with P1914?

In most cases the car remains drivable, possibly with reduced performance or a disabled auxiliary system. If symptoms include stalling, no-start or brake/steering warnings, treat it as urgent.

P1914 points to a fault in the transmission temperature sensor circuit. Specifically, the onboard computer has detected either an open circuit or a short to power or ground in the wiring that connects the sensor to the vehicle's control module. When this code appears, it means the module is no longer receiving a reliable signal from the temperature sensor, which can affect transmission operation and shift quality.

The powertrain control module continuously monitors sensors and actuators throughout the vehicle. For P1914 to set, the module must verify the fault condition across multiple drive cycles rather than triggering on a single anomaly. This prevents false codes caused by temporary electrical noise. Once confirmed, the module stores the code alongside a freeze frame snapshot that captures engine RPM, load, coolant temperature, and vehicle speed at the exact moment the fault was detected. Technicians often pull this data first because it reveals what conditions were present when the problem occurred.

When the transmission temperature sensor circuit fails, the ECU defaults to a safe strategy. Depending on which component is affected, the vehicle may enter a reduced-power limp mode, experience harder shifts, or operate normally while the Check Engine light remains illuminated. The driver typically notices the CEL before any dramatic change in behavior, but transmission performance may degrade if the issue persists uncorrected.

Common Symptoms

Check Engine Light illuminates on the dashboard
Vehicle may enter limp mode with reduced power output
Transmission shifts feel harsh, delayed, or irregular
Increased fuel consumption compared to normal driving
Affected sensor system operates intermittently or stops working entirely
Possible overheating warning if transmission temperature monitoring fails

Common Causes

Damaged or corroded electrical connector at the sensor or module
Broken, chafed, or melted wiring in the trans temp sensor circuit
Poor ground connection causing signal interference
Blown fuse feeding power to the affected circuit
Failed control module driver responsible for the sensor circuit
Defective transmission temperature sensor or actuator component

How to Diagnose P1914

Connect an OBD2 scanner and confirm P1914 is stored in the powertrain memory. Record the freeze frame data before clearing anything — this snapshot tells you exactly what the engine was doing when the failure occurred.
Check for any related diagnostic trouble codes. Secondary codes often point directly to the root cause, whether it is a power supply issue, ground problem, or a failed component. Also research TSBs for your specific make and model on the manufacturer website or nhtsa.gov, as many P1914 complaints have factory-issued software updates or service bulletins.
Perform a thorough visual inspection of the wiring harness and connectors tied to the transmission temperature sensor circuit. Look for cracked insulation, corrosion buildup, bent pins, or any signs of water intrusion. A loose or oxidized connector frequently causes the exact open or short conditions this code describes.
Measure reference voltage, ground integrity, and signal continuity at the sensor connector using a multimeter. Compare your readings against the voltage specifications in your service manual. Low voltage or no signal confirms the circuit fault.
Conduct a wiggle test on the harness while monitoring live data on the scanner. If the signal drops or fluctuates when you move the wiring, you have identified a broken wire or intermittent connection inside the insulation.
Clear the code and complete a full drive cycle that reproduces the conditions captured in the freeze frame data. Run the vehicle until it reaches normal operating temperature and performs the same driving maneuvers. If P1914 does not return, the issue was likely temporary. If it comes back, proceed with repairs based on your earlier findings.

Repair Options and Costs

The fix depends entirely on which part of the circuit has failed. Most shops address the cheapest possible cause before escalating to more expensive repairs.

Repair Type	Estimated Parts Cost	Estimated Labor Cost	Total Range
Wiring repair or connector replacement	$20–$80	$60–$170	$80–$250
Control module diagnosis and repair	$150–$500	$150–$500	$300–$1,000
Sensor or actuator replacement	$50–$200	$100–$300	$150–$500

Most P1914 repairs involve wiring or connector issues rather than a failed control module. An accurate diagnosis before purchasing parts prevents spending $1,000 on a new module when a $100 wiring repair would have solved the problem. Independent shop labor rates typically fall between $75 and $120 per hour depending on location.

Can You Drive with P1914?

P1914 carries a short-term drivability rating. In most cases the vehicle remains operational, though you may notice reduced performance, altered shift patterns, or a disabled auxiliary feature depending on which circuit is affected. The Check Engine Light will stay on, and prolonged driving with an unresolved transmission temperature sensor fault risks eventual damage to internal transmission components.

Treat the situation as urgent if you experience stalling, failure to start, or warning lights affecting brakes and steering. Otherwise, schedule diagnosis and repair within the next few days rather than weeks.