P1140 Code - Intake Valve Timing Control Performance Bank 1
Quick Answer
This mechanism hydraulically controls cam phases continuously with the fixed operating angle of the intake valve. Common causes include Faulty Intake Valve Timing Control Solenoid Valve Bank 1, Intake Valve Timing Control Solenoid Valve Bank 1 harness is open or shorted, Intake Valve Timing Control Solenoid Valve Bank 1 circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1140 indicates Intake Valve Timing Control Performance Bank 1.
- Common causes
- Common causes include Faulty Intake Valve Timing Control Solenoid Valve Bank 1, Intake Valve Timing Control Solenoid Valve Bank 1 harness is open or shorted, Intake Valve Timing Control Solenoid Valve Bank 1 circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P1140 Description
The Engine Control Module (ECM) receives signals such as crankshaft position, camshaft position, engine speed, and engine coolant temperature. Then, the ECM sends ON/OFF pulse duty signals to the intake valve timing control solenoid valve depending on driving status. This makes it possible to control the shut/open timing of the intake valve to increase engine torque in low/mid speed range and output in high-speed range.
The intake valve timing control solenoid valve changes the oil amount and direction of flow through intake valve timing control unit or stops oil flow. The longer pulse width advances valve angle. The shorter pulse width retards valve angle. When ON and OFF pulse widths become equal, the solenoid valve stops oil pressure flow to fix the intake valve angle at the control position.
What are the Possible Causes of the DTC P1140?
- Faulty Intake Valve Timing Control Solenoid Valve Bank 1
- Intake Valve Timing Control Solenoid Valve Bank 1 harness is open or shorted
- Intake Valve Timing Control Solenoid Valve Bank 1 circuit poor electrical connection
- Faulty Crankshaft Position Sensor
- Faulty Camshaft Position Sensor
How to Fix the DTC P1140?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1140 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Information for Specific Makes
- P1140 Audi — HO2S22 Internal Resistance Too High
- P1140 BMW — Mass or Volume Air Flow Circuit Range/Performance Problem
- P1140 Buick — HO2S Transition Time Ratio Bank 1 Sensor 2
- P1140 Cadillac — HO2S Transition Time Ratio Bank 1 Sensor 2
- P1140 Chevrolet — HO2S Transition Time Ratio Bank 1 Sensor 2
- P1140 Chrysler — Vacuum Reservoir Solenoid Circuit Condition
- P1140 Dodge — Vacuum Reservoir Solenoid Circuit Condition
- P1140 Ford — Water In Fuel Condition
- P1140 GMC — HO2S Transition Time Ratio Bank 1 Sensor 2
- P1140 Hyundai — Inlet Air Temperature Sensor Malfunction
- P1140 Infiniti — Intake Valve Timing Control Performance Bank 1
- P1140 Jeep — Vacuum Reservoir Solenoid Circuit Condition
- P1140 Lincoln — Water In Fuel Condition
- P1140 Mercury — Water In Fuel Condition
- P1140 MINI — Mass or Volume Air Flow Circuit Range/Performance Problem
- P1140 Nissan — Intake Valve Timing Control Performance Bank 1
- P1140 Subaru — Front Left Oxygen Sensor Heater Circuit Range
- P1140 Volkswagen — HO2S22 Internal Resistance Too High
Frequently Asked Questions about P1140 Code
No Frequently Asked Questions about P1140 Code found.
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