What does p0030 mean on a ho2s heater?
P0030 is a diagnostic trouble code (DTC) for “HO2S Heater Control Circuit (Bank 1 Sensor 1)”. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation.
What is the trouble code for ho2s heater?
P0030 is a diagnostic trouble code (DTC) for “HO2S Heater Control Circuit (Bank 1 Sensor 1)”. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $0.0 .
Is there a heater on the passenger side?
2010 Laramie recently had heater core and evap replaced after having the same issues described in this thread with heat on passenger side and blowing cold air on drivers side. There was also an antifreeze smell that got progressively worse.
How to check the flame signal on a unit heater?
Flame signal should be at least .6 micro amps. 2 flash Make sure power is applied to the unit. Turn thermostat above room temperature. Thermostat wires should be connected to the “R” terminal and “W” terminal on the control board. Make sure 120 volts are present at the transformer (black & white) wires. If not, check the supply power.
What should I do if my unit heater does not turn on?
Exhaust blower runs constantly with 120volts applied and no thermostat wires connected to the unit. Nothing operates. If the exhaust blower does not come on, check for 120 volts at the CMB terminal on the control board. If 120 volts are present, replace the motor, if not replace the board.
How to troubleshoot a unit heater with an exhaust blower?
4 flash Make sure the tubing is connected to the pressure switch and the exhaust blower. If it is, inspect it for cuts or nicks. If the tubing looks good, replace the pressure switch. If the pressure switch is closed before the exhaust blower comes on, replace the pressure switch. Unit was wired incorrectly. Refer back to the kit instructions.
What to do if your unit heater manifold pressure is wrong?
There should be 120 volts at the ACC terminal on the control board, if not the board is bad. If there is, then the fan motor is bad. Fan motor neutral wire not connected to the supply voltage neutral. Ensure the manifold pressure is set per the installation manual. If manifold pressure is correct, replace switch with part number 65361900.