P2243 — O2 Sensor Reference Voltage Circuit/Open (Bank 1 Sensor 1)

Powertrain (engine/transmission)

O2 Sensor Reference Voltage Circuit/Open (Bank 1 Sensor 1)

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Can I drive with P2243?

You can usually drive home and book an inspection within a few days.

Frequently asked questions

What does fault code P2243 mean?

P2243 means O2 Sensor Reference Voltage Circuit/Open (Bank 1 Sensor 1).

Can I keep driving with P2243?

You can usually drive home and book an inspection within a few days.

Related fault codes

• P2240 — O2 Sensor Positive Current Control Circuit/Open (Bank 2 Sensor 1)
• P2241 — O2 Sensor Positive Current Control Circuit Low (Bank 2 Sensor 1)
• P2242 — O2 Sensor Positive Current Control Circuit High (Bank 2 Sensor 1)
• P2244 — O2 Sensor Reference Voltage Circuit Range/Performance (Bank 1 Sensor 1)
• P2245 — O2 Sensor Reference Voltage Circuit Low (Bank 1 Sensor 1)
• P2246 — O2 Sensor Reference Voltage Circuit High (Bank 1 Sensor 1)
• P2247 — O2 Sensor Reference Voltage Circuit/Open (Bank 2 Sensor 1)
• P2248 — O2 Sensor Reference Voltage Circuit Range/Performance (Bank 2 Sensor 1)
• P2249 — O2 Sensor Reference Voltage Circuit Low (Bank 2 Sensor 1)

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