P2EA1: Exhaust Gas Temperature Sensor Circuit Bank 1 Sensor 6

What it means

The exhaust gas temperature sensor on bank 1 sensor 6 reports a circuit fault. EGT measurement at this position is unreliable.

At a glance

• Usually lights the check-engine light
• Affects emissions; the car can fail an emissions test

How it works

Bank 1 sensor 6 is an exhaust gas temperature sensor at a specific position in the exhaust system on the bank containing cylinder 1. The engine control module monitors its signal to estimate exhaust temperature and manage engine or emissions controls. This circuit code sets when the signal or circuit behavior for that sensor is faulty, without specifying a high or low condition.

Common causes

Most likely first.

1. Temperature sensor failed
2. Wiring or connector fault

Symptoms

• Check-engine light may be on
• Reduced engine performance
• Increased emissions or failed emissions test

How to diagnose it

1. Record freeze-frame data and compare bank 1 sensor 6 temperature with other available exhaust temperature readings and operating conditions.
2. Locate bank 1 sensor 6 using the vehicle's service information, then inspect its connector and exposed harness for heat damage, corrosion, or loose terminals.
3. Check whether the sensor reading changes plausibly as the exhaust warms, using scan-tool live data.
4. Test the sensor and its wiring for continuity and signal response according to the manufacturer's procedure.
5. Repair wiring faults first, then replace bank 1 sensor 6 if it fails testing.

Common fixes

• Reconnect or clean the bank 1 sensor 6 connector if loose or contaminated.
• Repair heat-damaged or broken wiring to bank 1 sensor 6.
• Replace the bank 1 sensor 6 exhaust gas temperature sensor if it fails testing.

Can I keep driving?

If the engine runs normally, a short, gentle trip may be possible, but reduced performance or emissions control can occur. Avoid heavy loads and prolonged driving until the bank 1 sensor 6 reading is reliable.