P2087: Exhaust Gas Temperature Sensor Circuit Intermittent (Bank 2 Sensor 2)

What it means

The EGT sensor at bank 2 sensor 2 signal jumps or drops out intermittently — typically a connector or chafed wire near the exhaust manifold heat zone.

At a glance

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

How it works

The exhaust gas temperature sensor at bank 2 sensor 2 reports temperature to the engine control module. The module monitors its signal for dropouts or sudden changes and sets this code when the signal is intermittent.

Common causes

Most likely first.

1. Connector loose
2. Connector with intermittent contact under vibration
3. Harness routed against vibrating component

Symptoms

• Check-engine light
• Possible intermittent reduced engine performance
• Possible exhaust or emissions-system warning

How to diagnose it

1. Check freeze-frame data and live EGT readings to see whether the bank 2 sensor 2 signal drops out as the fault occurs.
2. Inspect the sensor connector for looseness, damaged seals, corrosion, or pins that have backed out.
3. Trace the bank 2 sensor 2 wiring near the hot exhaust and look for chafing, heat damage, or contact with vibrating parts.
4. With the circuit safely accessible, wiggle the connector and harness while monitoring the signal for interruptions.
5. If the wiring and connections are sound, test the sensor and circuit continuity against the manufacturer's specification.

Common fixes

• Secure the loose bank 2 sensor 2 connector.
• Repair chafed or heat-damaged wiring and route it clear of vibrating parts.
• Clean or repair poor connector terminals and restore a sound connection.
• Replace the bank 2 sensor 2 EGT sensor if it fails testing.

Can I keep driving?

If the engine runs normally, a short, gentle trip may be possible, but avoid heavy loads and prolonged driving because the emissions system may not receive reliable temperature data. Stop if performance drops or an exhaust warning appears.