C0784 Trouble Code

View C0784 obd/2 error code description and symptoms. C0784 engine photo

Brake Switch Circuit Input Malfunction Indicates PCM did not receive a brake pedal position (BPP) input. Open or short in BPP circuit Open or short in stoplamp circuits Damaged PCM Malfunction in module(s) connected to BPP circuit. (Rear Electronic Module [REM] Windstar and LS6/LS8 or Lighting Control Module (LCM) Continental and Town Car. Damaged brake switch Misadjusted brake switch Check for proper function of stoplamps.

Circuit High Input codes like C0784 are mostly caused by defective alternators that develop excessive voltages, although there may be other causes as well, such as short circuits that 'leak' current into a particular system from other, unrelated systems that work on higher voltages. Note that in the case of short circuits that leak power into a control circuit, there is likely to be other, seemingly unrelated trouble codes present along with the code(s) being investigated. Diagnosing a 'high input' code will always involve a thorough testing of the charging system as a first step, followed by measures to isolate the system from all other possible sources of power during resistance, continuity, and reference voltage tests.

Difficulty Level (Easy)
Level
Repair Time (45 Min.)
Time
Cost Prediction : $ 80-120

C0784 Error Code Repair Process :

If your heater blower relay circuit failure check engine light is illuminated, it's best to take it in for diagnostic testing, which can feel like a hassle. Because while the lights vary in appearance from vehicle to vehicle, all have the same basic meaning: There's a problem with the car's emissions system. The on-board diagnostics system C0784 and engine control unit are in charge of monitoring a bunch of different heater blower relay circuit failure, and if they get a reading that's a little out of whack, up pops the check engine light.

Wrench Tool C0784 is a kind of Chassis Trouble Code

Diagnosing chassis noises can be one of the most frustrating problems technicians face. Fortunately, manufacturers have engineered noise, vibration and harshness (NVH) diagnostic techniques and equipment to find the source of the noise.

Common Causes of C0784

A common cause of code C0784 is the failure of Heater Blower Relay Circuit Failure, but there are several other possible causes as well, such as ;

C0784 code for all cars

You can view according C0784 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+C0784 Mitsubishi Galant Ix +C0784 Chery A1 +C0784 Mg Zt-t +C0784 Volkswagen Corrado +C0784 Skoda Scala

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