Whether you use your 240sx for daily driving, racing, or drifting, the best way to keep your Nissan functioning optimally is to get the right tools for monitoring its inner workings. Many choose aftermarket automotive gauges and other diagnostic devices to help monitor the most vital functions of their vehicle to ensure there is no damage being done to the vehicle’s engine, turbo, exhaust manifold and more. Nothing brings out a custom interior style like a set of gauges mounted to your 240sx’s dashboard or A-pillar.
Pulling Codes From Your 240sx ECU
SOHC Ka24e Codes
The ECU modes
The electronic control unit have five mode:
Mode I- Exhaust gas sensor monitor (Normal mode)
Mode II- Mixture ratio feedback control monitor
Mode III- Self-diagnostic
Mode IV- Switch on/off diagnostic system
Mode V- Real-time diagnostics system.
The unit automatically return to normal mode I when the ignition is switched off.
Only mode III will be studied here. Troubles code are stored on mode III. The stored codes will be lost if the car battery is disconnected or if after selecting mode III, mode IV is selected.
240sx Powering Up ECU without the car has been one of the most common question from people looking to get there Nissan 240sx KA or SR chipped and tuned. If you can’t or don’t know how to tune your ecu but want to save a lot of money by chipping it yourself, then we have a few videos that can help. Sending your ECU our get a daughterboard installed usually costs $200-$400 but if you buy the materials yourself you can do it for less then $100. Depending on the feedback this video gets, I will make another explaining what is needed to burn a bin file or tune to your eprom chips. To buy the Nissan consult plug needed to scan or connect your ecu to your laptop or PC can be purchased from Below.