P2A06

O2 Sensor Negative Voltage Bank 1 Sensor 1

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Increased fuel consumption
Unstable engine operation at idle
Check Engine Light Illuminates
Reduced engine power
Increased level of harmful emissions

Causes

Oxygen sensor malfunction
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Grounding problems
Engine ECU malfunction

How to Fix

Check the continuity of the oxygen sensor circuit
Inspect the sensor connector and contacts
Check circuit grounding
Replace the oxygen sensor if necessary
Check the operation of the engine ECU

Related codes

P2A00 P2A01 P2A05