My check engine light came on last week and I got the above two error codes. The O2 sensor is working, according to the voltage output reading. It’s within the range specified according to the Haynes repair manual. What could be the issue? Is the knock sensor error code related to the O2 code, or is this just coincidence?
Do not pay attention to code 0325. This code is kind of normal in these vans.
You need to resolve code 0141 REAR HEATED OXYGEN SENSOR HEATER.
Above 3200 RPM heater is OFF, below 3200 RPM heater is ON.
Resistance 2.3 – 4.3 Ohms @ 25°C (77°F) Check resistance between terminals 4 and 1 of electrical socket B4 located under the vehicle toward the read. Find the rear O2 sensor and you will find the electrical socket.
Check the electrical fuses too. There has been documented failure of fuse 26 of 7.5 Amp capacity.
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