C1440 Ford Code - Pressure Transducer Main/Primary Signal Faulted
Quick Answer
The pressure transducer is integral to the Hydraulic Control Unit (HCU). Common causes include Faulty Hydraulic Control Unit (HCU), Hydraulic Control Unit (HCU) harness is open or shorted, Hydraulic Control Unit (HCU) circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- C1440 Ford indicates Pressure Transducer Main/Primary Signal Faulted.
- Common causes
- Common causes include Faulty Hydraulic Control Unit (HCU), Hydraulic Control Unit (HCU) harness is open or shorted, Hydraulic Control Unit (HCU) circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code C1440 Ford Description
When the brake pedal is pressed, the stop lamp switch closes and a voltage is sent to the Powertrain Control Module (PCM). The PCM then sends a message over the High-Speed Controller Area Network (HS-CAN) to the ABS module indicating that the brake pedal has been pressed. DTCs set in the ignition cycle can only be cleared by cycling the ignition off and on once the fault has been corrected.
This DTC sets in every ignition cycle if the signal that the pressure transducer sends to the ABS module does not agree with the stop lamp switch position.
What are the Possible Causes of the DTC C1440 Ford?
- Faulty Hydraulic Control Unit (HCU)
- Hydraulic Control Unit (HCU) harness is open or shorted
- Hydraulic Control Unit (HCU) circuit poor electrical connection
How to Fix the DTC C1440 Ford?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C1440 Ford code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about C1440 Ford Code
1. What does the OBDII code C1440 mean on a Ford vehicle?
C1440 indicates a "Pressure Transducer Main/Primary Signal Faulted," meaning there’s an issue with the signal from the brake pressure transducer.
2. What are the common symptoms of the C1440 code?
Symptoms may include the ABS warning light or traction control light illuminating, reduced braking performance, or ABS system malfunctions.
3. What causes the C1440 code to appear?
Common causes include a faulty brake pressure transducer, damaged wiring or connectors, corrosion at the sensor connection, or a malfunctioning ABS module.
4. How do you diagnose the C1440 code?
Diagnosis involves checking the brake pressure transducer and its wiring for damage, testing the sensor's voltage and signal output, and scanning the ABS module for any related faults.
5. Can a faulty brake pressure transducer cause braking issues?
Yes, a faulty brake pressure transducer can affect the ABS and traction control systems, leading to compromised braking performance.
6. How do you fix the C1440 code on a Ford?
Repairs may include replacing the brake pressure transducer, repairing damaged wiring or connectors, cleaning corroded connections, or reprogramming the ABS module if needed.
7. Is it safe to drive with a C1440 code?
Driving with a C1440 code is not recommended, as it may affect the ABS and traction control systems, potentially compromising safety.
8. How much does it cost to fix the C1440 code?
Repair costs vary but may range from $150 to $400, depending on whether the brake pressure transducer or wiring needs repair or replacement.
9. Can a low brake fluid level trigger the C1440 code?
No, low brake fluid typically triggers different codes or warnings. The C1440 code specifically relates to electrical or signal issues with the brake pressure transducer.
10. Do I need to reprogram the ABS module after fixing the C1440 code?
In some cases, reprogramming or resetting the ABS module may be required after replacing the brake pressure transducer or repairing wiring.
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