I understand this code has to do with the air/gas ratio sensor. Will driving the car slowly for a few miles hurt the car?
Also when the mechanic tells me I need to replace the Oxygen sensor - how can I know that is right? I have checked the gas cap and it is on tightly...are there other things to check before replacing the sensor?
Check all fuses, then check the wiring of the two 02 sensors on either side of the cat. converter. If the fuses and wiring are fine, it is likely one of the oxygen sensors; one is about $50 and the other is $200 (parts only). Use only Honda recommended parts, not BOSCH.
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The Air/Fuel Ratio (A/F) sensor 1 is installed in the exhaust system and detects oxygen content in the exhaust gas. The A/F sensor transmits output voltage to the Engine Control Module (ECM). A heater for the sensor element is embedded in the A/F sensor (sensor 1). That would be the first sensor.
P1289 - Cylinder Head Temp Sensor High Input The A/F sensor is a planar dual-cell limit current sensor. The sensor element of the A/F sensor is the combination of a Nernst concentration cell (sensor cell) with an oxygen-pump cell, which transports ions. It has a heater in the element.
The sensor is capable of precise measurement a= 1, but also in the lean and rich range. Together with its control electronics, the sensor outputs a clear, continuous signal throughout a wide range (0.7 < a< air).
The exhaust gas components diffuse through the diffusion gap at the electrode of the oxygen pump and Nernst concentration cell, where they are brought to thermodynamic balance.
An electronic circuit controls the pump current through the oxygen-pump cell so that the composition of the exhaust gas in the diffusion gap remains constant at a = 1. Therefore, the A/F sensor is able to indicate air/fuel ratio by this pumping of current. In addition, a heater is integrated in the sensor to ensure the required operating temperature of 700 - 800?C (1,292 - 1,472?F).
The response (from LEAN to RICH) of the A/F (Bank 1) signal computed by ECM from A/F sensor 1 signal takes more than the specified time.
Symptoms - Engine Light ON (or Service Engine Soon Warning Light)
Possible causes # Harness or connectors (The A/F sensor 1 circuit is open or shorted.) # Air fuel ratio (A/F) sensor 1 # Air fuel ratio (A/F) sensor 1 heater # Fuel pressure # Fuel injector # Intake air leaks # Exhaust gas leaks # PCV # Mass air flow sensor
P2240 HONDA - Front Air/Fuel Ratio Sensor Bank 2 Sensor 1 IP Line High Voltage.
- Engine Light ON (or Service Engine Soon Warning Light) - High Fuel Consumption - Excessive Smoke from Exhaust
- Air/Fuel Ratio Sensor Bank 2 harness is open or shorted - Air/Fuel Ratio Sensor Bank 2 circuit poor electrical connection - Faulty Air/Fuel Ratio Sensor Bank 2 - Inappropriate fuel pressure - Faulty fuel injectors - Intake air leaks may be faulty - Exhaust gas leaks
the most common problem is driving with the gas cap off or loose. If this is your problem then tighten the gas cap and drive as usual. The light will go out on its own in a few days. If this is not your problem then you will have to have the cars computer codes read. Some auto parts store will hook up a reader to your cars computer and give you a read out for free. Other wise you will have to buy a code reader or take it to a mechanic.
The codes you provided indicate separate issues. Code 1167 is indicative of either a stuck fuel injector of the O2 sensors. Code 0340 indicates the CMP position sensor. Replacing the O2 sensors will likely clear the 1167 code assuming the fuel injectors are okay. It would be the first course of action. If there's no noticeable change in performance (i.e. stalling problem continues) then the CMP position sensor is likely your overall problem. Best of luck. Greg