Malfunction light The malfunction light is on but not flashing. What is the problem

Anti theft light flashing ??? When does it flash ? When trying to start the vehicle ? or all the time ? What vehicle , make , model an year ? No short

The flasher unit for the four ways is separate from the turn signal.
If the rear light is flashing fast means the front light is malfunctioning. Check all wiring from the dash to the light itself. I had one a wire was pinched and had broken

Flashing Diag Code P0122
TP circuit low input
DETECTION CONDITION
• If PCM detects TP sensor voltage at PCM terminal 89 below 0.10 V after engine start, PCM determines
that TP circuit has a malfunction.
POSSIBLE CAUSE
• TP sensor malfunction
• Connector or terminal malfunction
• Open circuit between TP sensor terminal C and PCM terminal 89
• Short to ground circuit between TP sensor terminal C and PCM terminal 89
• Open circuit between TP sensor terminal A and PCM terminal 90
• Short to ground circuit between TP sensor terminal A and PCM terminal 90
• PCM malfunction

Flashing Diag Code P0123
TP circuit high input
DETECTION CONDITION
• If PCM detects TP sensor voltage at PCM terminal 89 is above 4.77 V after engine start, PCM determines
that TP circuit has a malfunction.
POSSIBLE CAUSE
• TP sensor malfunction
• Connector or terminal malfunction
• Open circuit between TP sensor terminal B and PCM terminal 91
• Short to reference voltage (Vref) supply circuit between TP sensor terminal C and PCM terminal 89
• PCM malfunction

let auto zone code scan for free see what causing check engine light to flash on.could have faulty tps sensor faulty egr valve or idle speed contol valve.

The self-diagnostic system identifies malfunctions of signal systems such as sensors, actuators and wire harnesses based on the input signals received by the ECCS control unit. Various malfunctions are coded and displayed on the control unit by a series of blinking red and green lights. Results of the self-diagnosis are retained in the control unit's memory and are displayed when the mode selector, located on the rear of the control unit, Fig. 122, is switched to the On position. When displaying malfunction codes, the code number can be determined by counting the number of light pulses. The red light represents the first digit of the code, while the green light represents the second digit of the code. For example, a Code 32, would be displayed as three flashes of the red light, followed by two flashes of the green light. Malfunction codes can be translated as follows:

1. Code 11 -- Crank angle sensor circuit malfunction.
2. Code 12 -- Air flow meter malfunction.
3. Code 13 -- Water temperature sensor circuit malfunction.
4. Code 21 -- Ignition signal malfunction.
5. Code 23 -- Idle switch circuit malfunction.
6. Code 24 -- Transmission switch and clutch switch circuit malfunction.
7. Code 32 -- Starter signal malfunction.
8. Code 42 -- Throttle sensor circuit malfunction.
9. Code 43 -- Injector circuit malfunction.
10. Code 44 -- All monitored systems satisfactory.

This truck probably has Rear Wheel Anti-Lock (RWAL) brakes. There is a small black module near master cylinder that is the brain for this system. There are ways to check for diagnostic trouble codes in this system. Once you have any codes set, diagnosis can be fairly simple. PROCEDURE:
Diagnostic Trouble Codes (DTC) 's can be displayed by jumping terminals "A" and "H" of the Data Link Connector and observing the flashing of the "BRAKE" warning light. This should only be done when the brake lamp is "ON".
The terminals must be jumped for about 20 seconds before the code will begin to flash. Count the number of short flashes starting from the long flash. Include the long flash as a count. Sometimes the first count sequence will be short. However, subsequent flashes will be accurate. If there is more than one failure, only the first recognized code will be retained and flashed.

NOTES:
DTC's 6, 9 and 10 will only turn the "BRAKE" lamp on while the fault exists. These are soft codes faults and can only be read with the Tech 1 scan tool.
Do not jump terminals "A" to "H" if the "BRAKE" lamp is not on. Jumping the terminals with the "BRAKE" lamp off will set a false DTC 9. This will turn the "BRAKE" lamp on and disable the antilock system.

1, 11, & 12 ECU Malfunction

2 Open Isolation Valve or Malfunctioning ECU

3 Open Dump Valve or ECU Malfunction

4 Grounded Antilock Valve Reset Switch

5 Eccessive Actuations of the Dump Valve

6 Erratic Speed Signal

7 Shorted Isolation Valve or Faulty ECU

8 Shorted Dump Valve or Faulty ECU

9 Open Circuit to Speed Signal

10 Brake Lamp Switch Circuit

13, 14 and 15 ECU Malfunction

there is a malfunction in the srs system.

the flashing airbag light is indicating a failurein the system and it is flashing a code.

the beeping is coming from the controll module, if the controller detects a malfunction in the airbag warning light than it will beep in place of flashing the light, this is to inform the driver of a air bag malfunction.

the light bulb may be bad or it may have a poor connection even if you saw the light on, the controller said there is a resistance issue in that circuit.

but you still need to have that system check to find out what started the malfunction and commanded the light on.

good luck

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THE TURBINE SPEED (PART OF THE TRANSMISSION CONTROLS) SENSOR IS THE CULPRIT HERE, REPLACE IT.

Pull the code(s) at the moment the Check Engine light is flashing. Purchase an OBDII scanner (Auto Zone, Car Quest, O'Riely's, etc.) Be ready when it happens... do not shut off the engine ... plug the OBDII scanned into the DLC (Data Link Connector) and retrieve the code(s) at the moment it happens. If you still don't retrieve any codes when this happens, you have a malfunctioning ECM (Engine Control Module). Before you replace it (if this actually happens - no codes and Check Engine light is flashing), Disconnect both battery cables and touch them together for 30 seconds. Reconnect them to the battery and drive vehicle to see if it happens again (could be junk/corruption in ECM memory banks). If it happens again, the ECM is malfunctioning. REASONING: Whenever the "Check Engine" light comes on, there is ALWAYS a DTC (Diagnostic Trouble Code) stored in the ECM (Engine Control Module). If no codes are retrieved, there's only one cause - ECM MALFUNCTION!