What it means
Same as P242D on bank 1 sensor 5. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
At a glance
- Usually lights the check-engine light
- Affects emissions; the car can fail an emissions test
How it works
Bank 1 sensor 5 measures exhaust gas temperature and sends a signal on a circuit monitored by the control module. P2482 sets when that signal is higher than expected, which can occur if the signal is shorted to a supply; this is the high-signal counterpart to a low-circuit fault.
Common causes
Most likely first.
- Signal shorted to supply
- Connector pins corroded - high contact resistance
- Supply wire pinched against B+ source
Symptoms
- Check-engine light on
How to diagnose it
- Record freeze-frame data and check live data for bank 1 sensor 5 to see whether its reading is implausibly high compared with other available temperature readings.
- Inspect the bank 1 sensor 5 connector for corrosion, loose contact, or displaced terminals.
- Trace its wiring for pinching, melted insulation, or contact with a power feed, particularly near hot or moving parts.
- Using the manufacturer's wiring information, check the bank 1 sensor 5 signal circuit for a short to supply and inspect its connections.
- If the wiring checks out, test the sensor and circuit against the manufacturer's specification before replacing the sensor.
Common fixes
- Secure the bank 1 sensor 5 connector and correct poor terminal contact.
- Repair pinched or melted wiring that is shorting the signal to a supply.
- Replace damaged connector terminals or repair the affected circuit connections.
- Replace bank 1 sensor 5 if it fails the specified tests after wiring faults are ruled out.
Can I keep driving?
If the vehicle drives normally and the check-engine light is steady, a short, gentle drive is usually reasonable while you arrange diagnosis. Avoid heavy loads if power changes, because the module may be acting on unreliable exhaust-temperature information.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.