P1287 Fuel Injection Pump Controller Supply Voltage Low is an OBD-II trouble code that indicates a problem with the fuel injection pump controller supply voltage. This code can be caused by faulty wiring, connectors, or components within the engine control module (ECM). Additionally, low levels of fuel pressure in the system can cause this code…
The P1288 Intake Manifold Short Runner Solenoid Circuit Open or Shorted code is a diagnostic trouble code (DTC) that indicates a malfunction in the intake manifold runner control solenoid circuit. This can be caused by an opening in the wiring, a faulty connector, or a problem with the solenoid valve itself. In some cases, it…
P1290 CNG Fuel Pressure Too High is a diagnostic trouble code (DTC) that indicates the pressure of the compressed natural gas (CNG) fuel system is too high. When this error code is triggered, it signifies that the fuel pressure within the CNG system has exceeded the specified range, resulting in an imbalance that can impact…
P1291 is an OBD-II diagnostic trouble code that indicates there is a problem with the fuel heater circuit. This fault code occurs when the vehicle’s computer detects that no temperature rise has been seen from the fuel heaters, which are used to help warm up the fuel in cold conditions. This can be caused by…
The P1292 CNG pressure sensor voltage too high code indicates that the PCM (powertrain control module) has detected a higher than the normal signal coming from the CNG pressure sensor. The P1292CNG Pressure Sensor Voltage Too High error code indicates that the voltage reading from the CNG (Compressed Natural Gas) pressure sensor in the vehicle’s…
P1293 CNG Pressure Sensor Voltage Too Low is an error code that indicates a problem with the pressure sensor on a vehicle equipped with Compressed Natural Gas (CNG) fuel system. This code means that the voltage is sent from the pressure sensor to the engine control module (ECM) is too low. The ECM monitors this…
The P1294 Target Idle Not Reached code indicates that the engine’s idle speed is not reaching the desired or target idle speed as specified by the vehicle’s engine control module (ECM) or powertrain control module (PCM). In other words, the engine is not idling at the speed it’s supposed to under certain operating conditions.This means…
P1295 Loss of 5 Volts to TP Sensor is a diagnostic trouble code (DTC). This code indicates that the engine control module (ECM) has detected a voltage drop greater than five volts on the throttle position sensor circuit. The ECM monitors this signal and if it drops below five volts, it will set this DTC….
P1296 Loss of 5 Volts to Map Sensor is a diagnostic trouble code (DTC) which indicates that the voltage supplied to the manifold absolute pressure sensor has dropped below a certain level. This can be caused by either an electrical issue or a faulty MAP sensor itself. In order to diagnose this problem, it is…
P1297 No Change In Map From Start To Run is a diagnostic trouble code (DTC) that indicates there has been no change in the engine’s map from when it was first started to when it is running. This can occur due to a broken or disconnected vacuum line, an open circuit in the MAP sensor…
Lean Operation at Wide Open Throttle (WOT) is a term used to describe the operation of an engine when it runs with an air-fuel ratio that is on the lean side of stoichiometry. This means that there is less fuel being burned in comparison to the amount of oxygen present in the combustion chamber. This…
A P1299 Vacuum Leak Found (Iac Fully Seated) indicates that a vacuum leak has been detected in the intake manifold. This code usually suggests that one of the components connected to the IAC valve, such as an air hose or gasket, is not properly sealed and is allowing air to enter the engine. The IAC…