P1190 — FTS High - Fuel Pump Temperature Sensor High

OBD2 code P1190 flags a problem with the fuel delivery and mixture control (FTS high - fuel pump temperature sensor high). Short, gentle driving to a shop is usually possible. Common culprits: faulty fuel rail pressure sensor or wiring, contaminated or incorrect fuel, faulty fuel pressure regulator.

For Ford vehicles

02 sensor heater circuit low resistence fault 2 Jaguar or calibration resistor out of range diesel/mazda

powertrain (engine/transmission)

Is it safe to drive?

Drive with caution Drive with caution. Mixture and fuel-pressure faults can cause stalling, hesitation in traffic and — when severe — catalyst damage. Avoid long trips until diagnosed.

How to diagnose with an OBD scanner

Read the code and freeze frame Connect an OBD2 scanner, confirm P1190 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 fuel delivery and mixture control for damage, corrosion, chafing or poor contact.
Subsystem check Measure fuel pressure at the rail and compare with factory specification at idle and under load.
Subsystem check Check short-term and long-term fuel trims in live data to see which way the mixture is off.
Verify the repair Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm P1190 does not return.

Approximate repair cost

Repair cost depends on which component actually failed. Typical scenarios for P1190 (parts and labor, USD, independent shop rates): Replace the fuel pump: $400–$900; Replace the fuel filter: $80–$200; Clean or replace injectors: $200–$800; Replace the pressure regulator or sensor: $150–$450. Overall, fixing P1190 usually costs between $80 and $900. An accurate diagnosis before buying parts saves money — the most expensive scenario is rarely the first one to check.

Common questions

Is it safe to drive with P1190?

Drive with caution. Mixture and fuel-pressure faults can cause stalling, hesitation in traffic and — when severe — catalyst damage. Avoid long trips until diagnosed.

What does OBD2 code P1190 mean?

Will P1190 clear itself?

Sometimes P1190 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 is the most common cause of P1190?

The most common causes are: faulty fuel rail pressure sensor or wiring, contaminated or incorrect fuel, faulty fuel pressure regulator.

How much does it cost to fix P1190?

Replace the fuel pump — $400–$900; Replace the fuel filter — $80–$200; Clean or replace injectors — $200–$800; Replace the pressure regulator or sensor — $150–$450. Exact cost depends on the root cause, your vehicle and local labor rates — a proper diagnosis is the cheapest first step.

When your scan tool displays P1190, the engine computer has detected a problem with the fuel delivery system — specifically, the fuel pump temperature sensor is reporting a voltage that exceeds the expected maximum. This code falls under the powertrain category and points to an abnormal condition in the fuel pressure or temperature monitoring circuit. The underlying issue is usually one of three things: the sensor itself has failed, a wiring problem is sending a false high signal, or the fuel pump is genuinely overheating due to restricted flow or excessive load.

The engine control module continuously monitors sensor data while you drive. Once readings stray outside acceptable parameters for a set number of drive cycles, the system logs P1190 and turns on the check engine light. Freeze frame data stored with this code captures the exact operating conditions — engine speed, load, temperature, and vehicle speed — at the moment the fault occurred. That snapshot is invaluable when you start diagnosing, because it tells you whether the problem happened during idle, cruising, or hard acceleration.

Common Symptoms of P1190

Noticeable loss of power, especially under acceleration
Fuel odor inside or around the vehicle during severe cases
Rough idle with hesitation or stumble during throttle input
Check Engine Light illuminated
Fuel consumption noticeably higher than normal
Engine cranks longer than usual before starting, or fails to start on the first try

What Causes P1190?

Contaminated, diluted, or incorrect fuel disturbing the delivery balance
Weak or failing fuel pump unable to maintain adequate pressure
Clogged fuel filter restricting flow and causing the pump to overwork
Intake air leaks or vacuum leaks introducing unmetered air into the mixture
Faulty fuel rail pressure sensor or associated wiring and connectors
Poor electrical connections at the fuel pump harness

How to Diagnose P1190

Hook up your OBD2 scanner, retrieve P1190, and record the freeze frame data. This data shows engine conditions when the fault was detected — use it to replicate the scenario during your test drive.
Pull all stored and pending codes. Related codes often point to the root cause, such as a failing MAP sensor or a short in the harness. Check manufacturer TSBs for your specific make and model — the automaker may have a known fix or software update.
Inspect the wiring harness and connectors feeding the fuel pump and pressure sensor. Look for chafed wires, corrosion, melted insulation, or loose plugs that could create a high-resistance or short circuit condition.
Test fuel pressure at the rail with a gauge. Compare the reading to factory specs at idle and under simulated load. Low pressure points to a clogged filter or weak pump; excessive pressure may indicate a stuck regulator.
Review short-term and long-term fuel trims in live data mode. Sustained positive or negative trims reveal whether the ECU is compensating for a lean or rich condition, which guides your next steps.
Clear P1190 and drive the vehicle through a complete drive cycle that includes the conditions from the freeze frame data. Watch to see if the code returns — a one-trip fault may not repeat, but an active problem will.

Repair Options and Costs

Before replacing major components, verify the cause through testing. Common repair paths for P1190:

Fuel pump replacement — $400–$900 (parts and labor)
Fuel filter replacement — $80–$200 (parts and labor)
Fuel injector cleaning or replacement — $200–$800 (parts and labor)
Fuel pressure regulator or sensor replacement — $150–$450 (parts and labor)

Overall, fixing P1190 typically runs between $80 and $900 depending on which component is at fault. A proper diagnosis before purchasing parts prevents waste — the least expensive fix is almost always worth checking first.

Can You Drive with P1190?

Drive with caution. The fault indicates a fuel delivery or sensor issue that can lead to stalling, hesitation, or loss of power — all hazardous in traffic. In severe cases, an overly rich fuel mixture can damage the catalytic converter over time. Short trips to a repair facility are acceptable, but avoid long highway drives until the problem is identified and resolved.