Reason for P0130 code after both O2 sensors replaced.

Question

Vauxhall approved garage recently fitted two new O2 sensors (exhaust manifold and Cat outlet) to my VX220 2.0i 16v Turbo, but Engine Electronics light still comes on despite garage saying they reset MIL after the work was done. Any idea what the cause might be as the car is running fine with good fuel consumption, no exhaust smoke which suggests good fuel to air ratios?

Answer 1

P0130 - 02 sensor circuit malfunction

May circuit malfunction are caused byconnector and terminals such as loose connectors, In some cases trouble code do not produce drivabilty symptoms Testing the circuit and measuring the voltage on the 02 sensor is the only way of identifying the problem