How do I fix code P1259?
The most common cause for Error Code P1259 or VTEC system malfunction is low oil pressure. Thus, make sure you check your oil if it’s due for service. Change oil and filter if necessary. Clear the codes and then give it a try.
What is VTEC oil pressure switch?
VTEC stands for Variable Valve Timing with Electronic Control. The variable valve timing oil pressure switch is a normally open switch located at the VVT solenoid. When the VTEC oil pressure switch closes, the voltage should drop to zero. This is how the PCM knows if oil pressure was applied to the VTEC system.
How do I bypass the vtec oil pressure switch?
This can be easily bypassed with a simple wiring trick: On your engine harness, locate the VTEC oil pressure switch plug/wire (this wire comes from OBD1 ECU pin D6). Use a common T-tap or other method and simply tap this into the VTEC solenoid valve wire (the VTEC solenoid wire comes from OBD1 ECU pin A4).
What are the symptoms of a bad oil pressure switch?
Symptoms of a bad or failing oil pressure sensor
- The Oil Pressure Light is on. The oil pressure gauge inside your car will give you a good indication as to the condition of the engine’s oil levels.
- The Oil Pressure Light blinks constantly.
- Oil pressure gauge is at zero.
How do I bypass the VTEC oil pressure switch?
Can you bypass a VTEC solenoid?
This can be easily bypassed with a simple wiring trick: On your engine harness, locate the VTEC oil pressure switch plug/wire (this wire comes from OBD1 ECU pin D6). Do not cut the VTEC solenoid wire, simply connect the Vtec pressure switch wire to it.
What does p1259 mean on a Honda Accord?
What Does Code P1259 Mean? OBD II fault code P1259 is a manufacturer specific code that is defined by carmaker Honda as “VTEC System Circuit Fault (Bank 1)”, and is set on these applications when the PCM (Powertrain Control Module) detects a defect, malfunction, or failure in the electrical control/monitoring system of the VTEC mechanism on Bank 1.
What does the OBD code p1259 stand for?
OBD II fault code P1259 is a manufacturer specific code that is defined by carmaker Honda as “VTEC System Circuit Fault (Bank 1)”, and is set on these applications when the PCM (Powertrain Control Module) detects a defect, malfunction, or failure in the electrical control/monitoring system of the VTEC mechanism on Bank 1.
What does the p1259 code on a VTEC system mean?
As stated elsewhere, code P1259 refers to an electrical issue in the VTEC control system, and all diagnostic procedures for this code should start with a thorough visual inspection of all associated wiring and connectors. Nonetheless, some other common causes of code P1259 could include the following-
What does the p1259 Honda VTEC oil pressure sensor do?
P1259 Honda Description. The PCM monitors oil pressure conditions in the hydraulic circuit of the VTEC mechanism according to the VTEC oil pressure switch downstream of the VTEC solenoid valve. If there is a disparity between oil pressure condition in the hydraulic circuit that is determined by the PCM command, and the oil pressure condition…