The Throttle Position sensor signals the Engine Control Module as to the current position of the engine throttle valve.
The current throttle valve opening is based on the driver's input from the gas pedal. The ECM uses the information from this sensor to help calculate fuel delivery and spark timing.
Gear changes are accomplished by a command from the TCM to energize the clutch actuator to release the clutch; after which various actuators inside the transmission disengage the current gear, and depending on current operating conditions, engage the next higher or lower gear ratio. All of this happens much faster than a human driver could change gears, and in most applications, gear changes are as smooth and seamless as on any fully automatic transmission.
Difficulty Level (Expert)
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Repair Time (35 Min.)
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| Cost Prediction : $ 40-75 |
If your alternator load input failed low 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 C2139 and engine control unit are in charge of monitoring a bunch of different alternator load input failed low, and if they get a reading that's a little out of whack, up pops the check engine light.
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C2139 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. |
You can view according C2139 DTC for your car model. We selected several models to see obd2 solutions click and view it.
| +C2139 Cadillac 314 | +C2139 Talbot-lago America | +C2139 Emf 30 | +C2139 Infiniti Qx4 | +C2139 Gmc Typhoon |
Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.
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