Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
The cost to diagnose the C1440 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.
The pressure transducer is integral to the Hydraulic Control Unit (HCU). The pressure transducer sends a signal to the ABS module that varies in relation to the amount of pressure applied to the brake pedal. The more pressure that is applied, the greater the signal sent to the Anti-Lock Brake System (ABS) module. If a new pressure transducer is needed, then a new HCU must be installed.
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.
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