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P1259 HONDA - VTEC System Malfunction Possible causes- Low engine oil pressure or level - Open or short circuit condition - Faulty VTEC oil pressure switch - Faulty VTEC solenoid When is the code detected?The P1259 is set when there is a problem in the VTEC Oil Pressure Switch circuit or VTEC Solenoid Valve circuit
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If you have the five digit code, you need to remove the negative battery cable for 1 minute and then put the cable back on. hit the power button on the radio and type in the five digit radio code and you should be good to go.
P1259 is a code for vtec malfunction usually cause by a bad vtec solenoid, vtec pressure sensor, low oil level, bad connection. Was oil change done? May want to check the oil level. P1166 is a code for a primary o2 sensor 1.
reset the ecu pull #6 fuse 15a for 10 msec. check oil level fill if needed. start engine hold at 3 grand for at least 2 sec road test if still comes back 1259 repeat 2 times. If it is gone it is intermit problem check for loose terminals at VTEC solenoid vavle oil pressure switch and the ECM/PCM. If you still have the code turn ignition off remove resonator disconnect the VTEC oil pressure switch 2p connector check for contnuity between VTEC oilpress switch terminals 1 and 2 if none replace the oil pressure switch. if yes measure voltage between ECM/PCM connector B9 and body ground. Voltage? repair open wire between B9 and the oil pressure switch. If no than the ECM/PCM will need to be checked for the latest software and reprogrammed to be further diaged. This will only be able to bedone at the dealer.
HAVE TO FIND OUT WHY MY 2003-2005 HONDA CIVIC RADIO DOES NOT WORK. REMOVE BATTERY LAST WEEK AND RECODED THE RADIO. WORK FOR A FEW DAYS AND IS DEAD TO THE WORLD. HOW CAN I TAKE THE RADIO/CD UNIT OUT OF THE DASHBOARD WITH EASE. HOW CAN I TAKE THE RADIO/CD OUT AND IN ?