DB9 Top Gear Track
AO Silver Member
Join Date: Jan 2007
Location: United Kingdom
County: East Sussex
P2234 - Generic Type Powertrain - Fuel and Air Metering and Auxiliary Emission Controls - ISO/SAE Controlled
Description O2 Sensor Signal Circuit Shorted to Heater Circuit
Location Bank 2 Sensor 1
Notes P2231-P2236, This diagnostic is for the sensors (both wide band and switching) that have a PWM controlled heater. If the heater shorts to the signal circuit, the control module can determine this since the signal circuit will be shorted high at the same frequency that the heaters are operating at.
God knows what that means.... but it does seem to suggest an exhaust O2/Lambda sensor.
All the best
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