P2C64

O2 Sensor Pumping Current Trim Circuit High 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
Possible increased fuel consumption
Deterioration of vehicle dynamics
Dips during acceleration
Unstable idle speed

Causes

Bank 1 Sensor 3 Oxygen Sensor Malfunction
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Vacuum leak in the intake system
Problems with the fuel system (low pressure)

How to Fix

Check the integrity of the sensor wiring harness
Inspect connectors for oxidation or damage
Check fuel pressure
Replace oxygen sensor Bank 1 Sensor 3
Check the system for vacuum leaks

Related codes

P2C63 P2C65 P0138