Search engine trouble codes.
Example: P0120
U1840 Pontiac 25 engine code seems a kind of network problem, we try to show one by one the meaning and the solution.
Brief explanation of the U1840 Pontiac 25 code and definition of U1840 Pontiac 25 is the bottom side.
| u |
Network Code Problem is climate control system, lighting, airbags, etc. |
| 1 | MFG - Manufacturer Specific |
| 8 | Ignition System Or Misfire |
| 4 | BBV Sensor Circuit Low Voltage |
| 0 | Transmission Engaged At High Throttle Angle |
MFG - Manufacturer Specific codes, which have a '1' as their second digit to indicate they are unique to a particular vehicle make or model. These special codes were deemed necessary by the vehicle manufacturers so they could provide additional diagnostic information beyond the basic list of generic OBD II codes for all kinds of faults, not just emissions-related faults.
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How To Fix U1840 Pontiac 25 ?
Regarding the U1840 code, it would probably be worthwhile to carefully inspect the wire harness near the intake manifold bracket. This is done most easily from below the car in the area near the oil filter. |
The engine system, in conjuction with the engine control module (ECM)/powertrain control module (PCM), activates the U1840 code solenoid valve to control oil pressure to the engine mechanism that is installed in the valve system to switch valve timing between Low and High.If the engine solenoid valve has an open or short circuit, a DTC is stored. When you see U1840 Pontiac 25 engine fault code on your engine code reader this description will help you.
| U Codes | List of all Network codes. |
Final Step: In the definitions listed below, there is a test drive recommended after you've completed any repairs to see if the condition is fixed. Before you take a test drive after a repair, always erase the U Code(s) first. This will turn the check engine light off and then you will know if the check engine light returns, you've got further diagnostics to complete.
BE CAREFUL !
This engine code information is presented for information purposes only. This is not intended as repair advice and we are not responsible for any actions you take on any vehicle.
