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I don't know Odyessy sub model or engine size? Upstream should mean the sensor is before the cat. Downstream should mean the sensor is after the cat, in the exhaust.
I looked at 3.5L, the number one bank is the bank closest to firewall. The number one bank is the bank where the number one piston is located, in the firing order.
By the way in my database, I didn't see p0134 for some reason?
Bank 1 is located towards the driver's side. Sensor 1 is located upstream just below the exhaust manifold. EOBD II Error Code: P0134 Description:
Oxygen Sensor (O2S) 1, Bank 1/Heated Oxygen Sensor (HO2S) 1, Bank 1 - No Activity Detected Possible Causes: - Wiring.
- Signal wire between the Heated Oxygen sensor and ECM is disconnected.
- Heated Oxygen Sensor defective.
- ECM.
P0134 - O2 Sensor Circuit No Activity Detected Sensor 1 Bank 1
P0135 - O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1
P0053 - O2 Heater Resistance Bank 1 Sensor 1
P0030 - O2 Heater Control Circuit Bank 1 Sensor 1
You need to replace the O2 Sensor Bank 1 Sensor 1
Carquest can help you get the correct part and help you locate it.
with those codes showing, it could be either bad O2 sensors or there is a problem with the wiring to those sensors. Also, the wrong sensors may be installed. I'm assuming codes P0134, P0135, P0155.
Both codes are for the oxygen sensors.
P0134 oxygen sensor on bank #1, sensor #1 is bad.
P0420 oxygen sensor on bank #1, the sensor down by the catalytic converter, is also bad.
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