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Please fill the "Code Box" to find engine fault code.
If the check engine light illuminates, it will either blink or remain constant, depending on the problem. Either way, you should have the vehicle checked by a Qualified Service Technician as soon as possible.
P1143 Engine Error Code
When you check engine light came on code P1143 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However your vehicle's manufacturer may have a different definition for the P1143 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on your car models.
P1143 Code Symptoms
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P1143 OBD2 may also be triggered by faults earlier down the line. For example, a dirty MAF sensor might be causing the car to overcompensate in its fuel-trim adjustments. As a result, oxygen sensors are likely to report fuel mixture problems. |
Power Steering Pressure (PSP) Switch Signal Malfunction The PCM counts the number of times vehicle speed transitions from 0 to a calibratable speed. After a calibratable number of speed transitions the PCM expects that the PSP input should have changed. This DTC is set if the transition is not detected. Vehicle towed with engine running Power steering hydraulic concern was repaired but DTC was not erased PSP switch/shorting bar damaged SIG RTN circuit open PSP circuit open or shorted to SIGRTN PCM damaged Check, if possible, if vehicle was towed or power steering service was performed. Observe PSP V PID while checking wires for intermittents.
P1143 OBD-II Diagnostic Powertrain (P) Trouble Code DescriptionP1143 OBD-II Trouble Code Heated Oxygen Sensor 1 Lean Shift Monitoring Bank 1 is one of the definitions for the P1143; however your vehicles manufacturer may have a different definition for the P1143 code. Please check below fP1143 Code Review :The reason of P1143 OBD-II Engine Error Code is P1143 Heated Oxygen Sensor 1 Lean Shift Monitoring Bank 1. |
P1143 Code Dictionary Meaning:
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1 - MFG - Manufacturer Specific 1 - Fuel And Air Metering 4 - Control Module Throttle Actuator Position Performance 3 - TFP Valve Position Switch-Drive Without Drive Ratio |
How long can you drive with a P1143 code ?
If your vehicle is displaying a P1143 OBD2 error code but is still running and driving normally, it means that the issue might not be immediately critical or causing immediate harm to the vehicle. However, it's important to address the issue as soon as possible for several reasons:
- Potential for Worsening
- Decreased Fuel Efficiency
- Emissions Testing Compliance
- Risk of Further Damage
- Safety Concerns
- Legal Considerations