P0062 indicates the powertrain control module has detected a malfunction in the heating element circuit of the post-catalytic converter oxygen sensor on Bank 2 (typically the passenger side on V-type engines). The heater warms the sensor quickly so it can operate efficiently; when this circuit fails, the sensor cannot reach operating temperature and emissions monitoring is compromised.
The heated oxygen sensor itself has failed internally, typically due to thermal cycling wear, contamination, or age. The heating element opens or shorts internally.
Damaged, chafed, or corroded wiring in the heater circuit, or a corroded connector causing high resistance or open circuits.
A blown fuse or faulty relay that supplies power to the O2 sensor heater circuit on Bank 2 has failed, cutting voltage to the sensor.
Prolonged exposure to extreme exhaust temperatures can damage the sensor connector or wiring insulation, causing short circuits to ground or battery voltage.
Rarely, the powertrain control module may have an internal fault in the driver circuit that controls the Bank 2 Sensor 3 heater. This should only be considered after all other causes are verified.
No. The PCM (powertrain control module) is almost never the cause of P0062. While some shops may recommend replacing the computer, the fault is almost always the sensor itself, wiring, connectors, fuses, or relays. PCM failure for this specific circuit is extremely rare and should only be considered after every other component has been tested and ruled out.
Yes, you can typically drive the vehicle, but the Check Engine Light will remain on and the vehicle may fail emissions testing because the post-catalyst oxygen sensor cannot function properly without its heater. This does not typically cause drivability issues.
Bank 2 refers to the cylinder bank that does not contain cylinder #1 (typically the passenger side on V6/V8 engines). Sensor 3 indicates this is the third oxygen sensor in the exhaust stream, located after the catalytic converter (downstream), used to monitor converter efficiency.
Diagnostic costs vary by shop. Parts costs include the oxygen sensor (typically $100-$300 for an aftermarket sensor, more for OEM), plus any wiring repairs or fuse/relay replacements if needed. Costs are not listed here as they vary by location and supplier.