2000 honda accord setting p1259 vtec malfunction code,mitchells repair info not very clear
2000 Honda accord 2.3
Hi and welcome, how is the oil level? did you just have the oil serviced? i'm trying to search for this code with honda and i'm not coming up with that code just yet so check the oil level and i'll get back with you on this I cannot find code p1259 Jerry39731.5160458333
DTC P1259: A problem in the VTEC Oil Pressure Switch circuit or VTEC Solenoid Valve circuit.
Do the Engine Control Module (ECM)/Powertrain Control Module (PCM) reset procedure.
Start the engine.
Warm up the engine to normal operating temperature (cooling fan comes on).
Road test the vehicle:
Accelerate in 1st gear to an engine speed over 4,000 rpm. Hold that engine speed for at least 2 seconds. If DTC P1259 is not repeated during the first road test, repeat this test two more times.
Go to step 5.
Intermittent failure, system is OK at this time. Check for poor connections or loose wires at VTEC solenoid valve and ECM/PCM.n
Turn the ignition switch OFF.
Disconnect the VTEC oil pressure switch 2P connector.
Check for continuity on the VTEC oil pressure switch between the pressure switch 2P connector terminals No. 1 and No. 2.
Go to step 8.
Replace the VTEC oil pressure switch.n
Turn the ignition switch ON (II).
Measure the voltage between the VTEC oil pressure switch harness 2P connector terminal No. 2 and body ground.
Go to step 10.
Inspect for an open or short to ground in the wire between the VTEC oil pressure switch and the ECM/PCM (C10). If the wire is OK, substitute a known-good ECM/PCM and recheck.n
Measure voltage across the VTEC oil pressure switch harness 2P connector.
Go to step 11.
Repair open in the wire between the VTEC oil pressure switch and G101. If the wire is OK, substitute a known-good ECM/PCM and recheck.n
Disconnect the VTEC solenoid valve 1P connector.
Check for continuity on the VTEC solenoid valve between the solenoid valve 1P connector terminal and body ground.
Go to step 14.
Replace the VTEC solenoid valve.n
Remove the VTEC oil pressure switch (A) and install the special tools as shown, then reinstall the VTEC oil pressure switch.
Reconnect the VTEC solenoid valve 1P connector and VTEC oil pressure switch 2P connector.
Connect a tachometer.
Check oil pressure at engine speeds of 1,000, 2,000 and 4,000 rpm. Keep measuring time as short as possible because the engine is running with no load (less than one minute).
Go to step 19.
Inspect the VTEC solenoid valve.n
Attach the battery positive terminal to the VTEC solenoid valve terminal.
Start the engine and check oil pressure at an engine speed of 3,000 rpm.
Go to step 23.
With the battery positive terminal still connected to the VTEC solenoid valve, measure voltage between C10 and body ground.
Go to step 24.
Disconnect the battery positive terminal from the VTEC solenoid valve terminal.
Check for continuity between the VTEC solenoid valve harness 1P connector terminal and the ECM/PCM connector terminal B12.
Go to step 27.
Repair open in the wire between the ECM/PCM (B12) and VTEC solenoid valve connector.n
Check for continuity between the VTEC solenoid valve 1P connector terminal and body ground.
Repair short in the wire between the ECM/PCM (B12) and VTEC solenoid valve connector.n
Substitute a known-good ECM/PCM and recheck. If symptom/indication goes away, replace the original ECM/PCM.n
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