Toyota Repair Problems? Ask a Mechanic for Answers ASAP
Hello I will help you with your question,
The P1130 is a code that means the engine computer has determined that the signal from the upstream oxygen sensors are missing or out of the expected range. Diagnosis with a scantool that will show the sensor data to see which upsteram sensor voltage is out of range when they are warmed up.
Let me know what I can do to help you with this
The sensors can be expensive and hard to change so watching the data from the sensors with a scantool will show which one needs to be changed. There may be a problem with the wiring between the sensor and the computer so replacing the sensor would not solve that but it probably is one of the upstream sensors. There are two.
The sensors can be very hard to get out of the exhaust so an hour's diagnosis at a shop with a scanner and then have them change whichever one shows up dead with an inspection of the wiring would be the best solution