U3343 Caterham Seven OBD Code

OBD/2 U3343 error code description and symptoms.

Catalytic converters must be warm before they can work properly. On a cold start the PCM provides a rich mixture to keep the cold engine running.
All that extra fuel goes into the catalytic converter. But the exhaust isn't very hot, because, ah, the engine is pretty cold. GM has employed several strategies to fire up the catalytic converter quicker and reduce cold start emissions. One way is to use a secondary air pump that pumps outside air directly into the catalytic converter.

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.

U3343 Caterham Seven Error Code Repair Process :

If your fuel stepper motor malfunction 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 U3343 and engine control unit are in charge of monitoring a bunch of different fuel stepper motor malfunction, and if they get a reading that's a little out of whack, up pops the check engine light.

Difficulty Level (Expert)

Repair Time (35 Min.)

Cost Prediction : $ 40-75

Common Causes of Caterham Seven U3343 OBD2 Code

A common cause of code U3343 is the failure of Fuel Stepper Motor Malfunction, but there are several other possible causes as well, such as ;

• Dirty Oil
• Faulty Fuel injector
• Intake Valve Timing Control Solenoid Valve circuit poor electrical connection
• Continuous oil flow to the VCT piston chamber

U3343 is a kind of Network Trouble Code U-code indicates that engine communication errors and shows lost communication with engine parts.U-Codes are fairly straight forward, given all of the articles and technical publications that have been written regarding these problematic codes. In most cases, it just comes down to identifying the module that isn't communicating with the other modules on the CAN bus line for whatever reason.

U3343 code for other Caterham cars

You can view according U3343 DTC for your car model. We selected several models to see obd2 solutions click and view it.

• U3343 Caterham 120 Superlight
• U3343 Caterham 1700
• U3343 Caterham 21
• U3343 Caterham 275s-sv
• U3343 Caterham 485r
• U3343 Caterham 7
• U3343 Caterham Beaulieu
• U3343 Caterham C
• U3343 Caterham R300
• U3343 Caterham Roadsport
• U3343 Caterham Seven S3
• U3343 Caterham Super
• U3343 Caterham Super 7
• U3343 Caterham Superlight
• U3343 Caterham Superseven
• U3343 Caterham Vx

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