What causes a code 33 on an OBD?
What causes a code 33 on an OBD?
33 – MAP sensor circuit error (signal high indicating low vacuum) Engine running rich (too much fuel, black smoke from exhaust) Due to erratic engine vacuum, other engine performance problems can cause a code 33 to set
Can a bad vacuum hose cause a bad MAP sensor?
For example, in many applications a leaking vacuum hose or a bad throttle position sensor (TPS) may cause a trouble code that points to a faulty MAP sensor. Troubleshooting the sensor is the only way to determine whether the sensor or part is actually bad. On some models, you only need to remove a couple of screws to get to the sensor.
What causes a bad code on a MAP sensor?
Remember that even though the code points to the potential problem, the particular circuit or component involved may not be at fault. Instead, a related component may have triggered the code. For example, in many applications a leaking vacuum hose or a bad throttle position sensor (TPS) may cause a trouble code that points to a faulty MAP sensor.
What does the Check Engine light on a MAP sensor mean?
Sometimes, a malfunction in the MAP sensor or its circuit will trigger the check engine light (CEL). Scanning the computer, you may find a P010X series of codes stored in memory. Here is a brief description of these codes: P0105: MAP sensor circuit malfunction.
33 – MAP sensor circuit error (signal high indicating low vacuum) Engine running rich (too much fuel, black smoke from exhaust) Due to erratic engine vacuum, other engine performance problems can cause a code 33 to set
For example, in many applications a leaking vacuum hose or a bad throttle position sensor (TPS) may cause a trouble code that points to a faulty MAP sensor. Troubleshooting the sensor is the only way to determine whether the sensor or part is actually bad. On some models, you only need to remove a couple of screws to get to the sensor.
Remember that even though the code points to the potential problem, the particular circuit or component involved may not be at fault. Instead, a related component may have triggered the code. For example, in many applications a leaking vacuum hose or a bad throttle position sensor (TPS) may cause a trouble code that points to a faulty MAP sensor.
How does a MAP sensor work on a car?
What Does a Map Sensor Do? Basically, a MAP sensor reads the amount of air pressure in relation to vacuum inside the intake manifold, either directly or using a vacuum hose. Then, it translates this pressure into a voltage signal that the sensor feeds to the power control module (PCM), your car’s computer.
What does code 12 mean on GM OBD?
The system will enter the diagnostic mode. In this mode, the computer will display a Code 12, three consecutive times, by flashing the “CHECK ENGINE”, “SERVICE ENGINE SOON” or “MALFUNCTION INDICATOR LAMP” or light. A Code 12 consists of one flash, a short pause, then two flashes in rapid succession.
What does code 12 mean on ground terminals?
Ground terminals A and B (see diagram below) with the ignition “ON” and engine not running. The system will enter the diagnostic mode. In this mode, the computer will display a Code 12, three consecutive times, by flashing the “CHECK ENGINE”, “SERVICE ENGINE SOON” or “MALFUNCTION INDICATOR LAMP” or light.
How to count the flashes of an OBD1 code?
Count the flashes. There will be a longer pause between the codes if you have several trouble codes and a shorter pause between the digits of the trouble codes. For example, code 16 = 1 flash * Pause * 6 flashes. When all trouble codes are outputted, it will flash the code 12 – 1 flash * Pause * 2 flashes.
How to search the adjustment reason codes reason code?
How to Search the Adjustment Reason CodeLookup Document 1. Hold Control Key and Press F 2. A Search Box will be displayed in the upper right of the screen 3. Enter your search criteria (Adjustment Reason Code) 4. Click the NEXT button in the Search Box to locate the Adjustment Reason code you are inquiring on
Why do I not see the 12 code three times?
If you do not see the “12” flash three times, your diagnostic circuit is defective. Some vehicles will display stored trouble codes, then “12” again, followed by energizing “most system controlled relays.” The fuel pump relay will not energize. The idle air control valve will fully extend to enable checking minimum idle speed.
What do the codes mean on Ford OBD?
The codes are defined as to what system is affected. When possible we give the more descriptive name of the component and the more commonly known OBD II component name. This information combined with proper testing procedures, specifications, and tools like a digital multimeter can help you fix the vehicle right the first time.
