P2A08

O2 Sensor Negative Voltage Bank 1 Sensor 3

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$28–89 (est.)

Symptoms

Check Engine light comes on
Increased fuel consumption
Reduced engine power
Unstable engine idling
Dips during acceleration

Causes

Bank 1 Sensor 3 Oxygen Sensor Malfunction
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Malfunction of the catalytic converter
Sensor Grounding Problems

How to Fix

Check the integrity of the wiring to the O2 sensor
Check sensor connections and connectors
Check sensor resistance and voltage
Replace a faulty oxygen sensor
Check the condition of the catalytic converter

Related codes

P2A00 P2A03 P2A0A