P0691
Fan 1 Control Circuit Low
DTC P0691, sometimes indicated as P069100 is an OBD diagnostic trouble code indicating a generic fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the transmission (gearbox) causing fan 1 control circuit low.
The engine cooling fan is controlled by the engine control module (ECM) by means of a duty cycle signal. The ECM monitors the fan speed by means of a pulse width modulation (PWM) signal. The PWM signal is generated by the ECM by switching the ground of the fan control circuit on and off.
The PWM signal is low (pulses are wide) when the fan is off and high (pulses are narrow) when the fan is on. The PWM signal is used to control the fan speed by means of a duty cycle. The duty cycle is the percentage of time that the PWM signal is high (on) compared to the time that the PWM signal is low (off).
The ECM monitors the fan speed by means of a PWM signal. The PWM signal is high (pulses are narrow) when the fan is on and low (pulses are wide) when the fan is off. The PWM signal is used to control the fan speed by means of a duty cycle. The duty cycle is the percentage of time that the PWM signal is high (on) compared to
- P0691: Fan 1 Control Circuit Low
- P0691: Engine coolant blower motor 1 – circuit low
- P0691 00: Engine coolant blower motor 1 - circuit low
Bulletins are notices put out by manufacturers in conjunction with the NHTSA to notify the public of manufacturing issues or changes.
- PIC6160 - ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN
CHEVROLET: This preliminary information communication provides information to the technician with the step to diagnose and repair vehicle that may have an engine cooling fan that is inoperative with diagnostic trouble code P0480 of P0691. Dealer will - PIC6160B - ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN
CHEVROLET: This preliminary information communication provides information to the technician with the step to diagnose and repair vehicle that may have an engine cooling fan that is inoperative with diagnostic trouble code P0480 of P0691. Dealer will - PIP5066 - ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN
CADILLAC: This preliminary information communication provides information to the technician about vehicles that have an engine overheat concern or cooling fans are inoperative. Technician may find diagnostic trouble codes P0480, P0691, P0692, or p125 - PIC6160A - ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN
CHEVROLET: This preliminary information communication provides information to the technician with the step to diagnose and repair vehicle that may have an engine cooling fan that is inoperative with diagnostic trouble code P0480 of P0691. Dealer will
2008 CHRYSLER TOWN AND COUNTRY with 103000. miles
The day we bought our vehicle we started having issues. The car would crank and not start for several seconds. Would randomly (every few months) shut off while driving (leaving power brakes/steering unavailable) and randomly just not start at all. Now we are having many electrical failures daily for no less than 20 minutes at a time: horn on continuous honk, wipers going crazy, wiper fluid spraying out, car shutting down in very dangerous situations, locks going up and down, the front seat blower motor shutting off intermittently. Also randomly the car will not 'shut off' when i take the key out. It's fully driveable without the key and the key opening is in the 'off' position. All of these things happen for about 20 minutes and then the car goes back to normal. When it's shut off, the car will not turn back on for apx 20 minutes. I was most recently stuck in a very dangerous intersection just as i was merging onto another freeway at the top of a clover-leaf intersection during rush-hour. Unable to get out of the vehicle and unable to start or move the vehicle - praying i wouldn't get hit, but i couldn't see because my wiper fluid was spraying at a constant speed and my wipers would not turn on. They've now 'guessed' that many of our issues are tipm related, but they're not guaranteeing that it will solve the problem and will cost $1200. They've ordered the party but i can't afford it! Pay the mortgage, or death by Chrysler? I have a copy of some codes that were pulled the first day of the 'daily' issues: U0141, P2533, C121C, B1A79, B10EC, P0691 - since then the list has more than doubled, but they did not provide me with a copy of the codes. I've contacted Chrysler explaining that this car is leaving us in horribly dangerous situations, but they have no interest in helping out. I made sure to say my 'goodbyes' on their recorded lines.
ELECTRICAL SYSTEM,