I have a 98 Toyota Camry showing codes po300,po302,p1135,p1130 I have changed spark plugs and the air intake hose, o2 senior already

P0302 TOYOTA - Cylinder 2 Misfire Detectedhttp://engine-codes.com/p0302_toyota.htmlForum CodePossible causes- Faulty spark plug 2
- Faulty ignition coil 2
- Ignition coil 2 harness is open or shorted
- Ignition coil 2 poor electrical connection
- Clogged or faulty fuel injector 2
- Injector 2 harness is open or shorted
- Injector 2 poor electrical connection
- Improper spark plug 2
- Insufficient cylinder 2 compression
- Incorrect fuel pressure
- Intake air leak
P0135 - O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1http://engine-codes.com/p0135.htmlForum CodePossible causes- Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit open shorted to ground
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit poor electrical connection
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit fuse
- Faulty Engine Control Module (ECM)
Tech notes The code means that there is a problem with the heater element circuit of the heated oxygen sensor. The Engine Control Module (ECM) monitors how long it take the sensor to warm up and start sending an adequate signal. The code means the the sensor is taking too long to warm up. Replacing the O2 Sensor 1 usually takes care of the problem
P1705 TOYOTA - Direct Clutch Speed Sensor Circuit Fault.
This is related to the sensor that gives info about the slippage rate o fthe transmisssion to the Transmission Control Module..

These are both air fuel ratio sensors, These sensors are located in the exhaust manifolds, the front one (bank 2) is easy to get to, the one in the rear is more difficult, they require a special socket to remove and install. The O2 sensors are located behind the catalytic converter and are not the same as the A/F ratio sensors.Replacing the sensors is not what the codes are telling you.You could have a plugged air filter giving you diminished air intake. That's not a bad sensor. A mass air flow sensor could be reading bad and giving you a bad mix of fuel so that your O2 sensor reads a problem. Get it? Or the O2 sensors could be bad after all, probably not both though.

Was the computer reset after the thermostat was replaced?? If not, it must be reset to clear prior codes. as for the p1130/1135, they are related here is some info>>>>http://www.engine-light-help.com/toyota-engine-light.html

Hello. Sorry to hear about your troubles.

The P-0125 DTC:
Specifically, the "coolant temperature is too low for closed loop operation", This indicates a partially stuck open thermostat; the coolant is not reaching the optimal temperature to allow the computer to use the various sensors on the engine; it is staying in a pre-programmed or defult mde.

The P1130 and the P1135 indicates a bad Air-Fuel sensor.
On a 4 cylinder, this would be the one on the exhaust manifold.

Replace the thermostat and the air/fuel sensor. Try to use Toyota parts; it has been shown that 'aftermarket' sensors do not perform very well in Toyotas. If you buy a 'generic' sensor, the code may remain, and you problm will not be fixed.

Thanks for choosing FixYa for asistance.

Follow the link below for an intense article about P1135 and possible solutions. It sounds like it's most likely an O2 sensor but there are other possibilities.
P1135

P0125- Engine not reaching operation temp quick enough. Possible problems:

• Insufficient warm up time
• Low engine coolant level
• Leaking or stuck open thermostat
• Faulty coolant temp sensor
• P1130- A/F Sensor Circuit Range/performance, Bank 1 Sensor 1

Hi.. On your question the definition of the codes are:
P0171, System to lean ( Fuel trim)
P1130, Air / Fuel sensor circuit range ? performance malfuntion This code is exclusive california Emissions). Oxigen sensor Performance malfuntion.
The first step you need to do is Check the Oxigen ( O2 sensor)
Connections The front and the rear one.
Check the condition of the Air filter Replace if need.
Check Spark plug Replace if need.
Check Fuel condition, Replace fuel filter if need.
And Clear the Codes if averything is good.
If the code P1130 return Replace the Air fuel ratio sensor..

Ok.. I hope this help on your question. If need more info letme know.

Thankyou for use fixya...

All of these codes are for a bad A/F sensor (O2 sensor) bank # 1 sensor # 1 nothing to do with spark plug of gas cap. Replace this sensor and your code will go away.

Replace the coil pack.

Replace the coil pack..