P340C Proton Gen2 OBD Code

OBD/2 P340C error code description and symptoms.

Output Shaft Speed sensor circuit intermittent failure The output shaft speed sensor signal to the PCM is irregular or interrupted.
Harness connector not properly seated Harness intermittently shorted, or open Harness connector damaged OSS sensor damaged, or not installed properly Verify harness and connector integrity Verify OSS sensor proper installation.

One example of this would be when an automatic vehicle in placed in gear. To prevent the added drag from the torque converter and transmission from reducing the idling speed, the PCM will command the idle control valve to allow more air to enter the engine, while at the same time, adjusting the injector pulse width to inject more fuel to suit the increased amount of air. Note that the idle air control valve is closed by the PCM when the throttle plate is opened to prevent excess air from entering the engine.

P340C Proton Gen2 Error Code Repair Process :

The scent may P340C signal oil or coolant leaking from their normally closed-loop systems, or it may indicate dangerous exhaust gases invading your car's interior. Car and truck exhaust contains toxic gases such P340C, so if the inside of your car aux a/c control switch reference circuit short to battery as if you were standing behind your car, get out and get it fixed. Fight the urge to take a little nap first. So sleepy. That's the carbon monoxide talking, friends. At least open a window on your way to the shop.

Difficulty Level (Expert)

Repair Time (35 Min.)

Cost Prediction : $ 90-120

Common Causes of Proton Gen2 P340C OBD2 Code

A common cause of code P340C is the failure of Aux A/C Control Switch Reference Circuit Short to Battery, but there are several other possible causes as well, such as ;

• Camshaft Position Sensor harness is open or shorted
• Camshaft advance mechanism binding (VCT unit)
• Air fuel ratio (A/F) Sensor 1 Bank 1 circuit poor electrical connection
• Improper ignition timing

P340C is a kind of Powertrain Trouble Code Powertrain of a modern automobile, comprising engine (with exhaust system), transmission, drive shaft, suspension and the wheels. In a motor vehicle, the term powertrain or powerplant describes the main components that generate power and deliver it to the road surface, water, or air.

P340C code for other Proton cars

You can view according P340C DTC for your car model. We selected several models to see obd2 solutions click and view it.

• P340C Proto Spirra
• P340C Proton 300
• P340C Proton 400
• P340C Proton Arena
• P340C Proton Gen
• P340C Proton Impian
• P340C Proton Inspira
• P340C Proton Juara
• P340C Proton Perdana
• P340C Proton Persona
• P340C Proton Preve
• P340C Proton Putra
• P340C Proton Saga Flx
• P340C Proton Saloon
• P340C Proton Satria
• P340C Proton Savvy
• P340C Proton Tiara
• P340C Proton Waja
• P340C Proton Wira

Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.

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