B1200 OBD-II Trouble Code: Climate Control Pushbutton Circuit Failure

Our certified mechanics come to you · Get a fair and transparent estimate upfront

Red-stars EXCELLENT RATING ON

Cost of diagnosing the B1200 code

B1200 is a diagnostic trouble code (DTC) for "Climate Control Pushbutton Circuit Failure". 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. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford$20.00
Toyota$20.00
BMW$20.00
SCHEDULE B1200 DIAGNOSTIC Get a fair and transparent estimate upfront

B1200 code definition

The B1200 diagnostic trouble code refers to a reported electrical failure in one or more of the climate control system's pushbuttons.

What the B1200 code means

The climate control system regulates air and temperature within the vehicle cabin, including heating and air conditioning. A B1200 trouble code is logged on the vehicle's computer if one or more of the pushbuttons fails to send an input to the climate control system.

What causes the B1200 code?

The most common cause for a B1200 code is a faulty or damaged pushbutton. The pushbuttons may be damaged if liquids have been spilled on the faceplate. Faulty wiring within the climate control system may also be to blame for a B1200 code.

What are the symptoms of the B1200 code?

Quite simply, if there is a malfunction with the climate control pushbutton circuit, one or more of the buttons will cease to work. In the case of a B1200 code, the climate control system should be considered disabled or at least unreliable.

In addition, for the sake of diagnosing the problem, the dashboard trouble lamp will be illuminated and the B1200 code logged on the vehicle's computer.

How does a mechanic diagnose the B1200 code?

The B1200 code can be diagnosed first by inputting into the vehicle's powertrain control module with an OBD-II code reader and scanning for the code. The climate control system should be tested in order to verify the code. Testing each of the buttons and verifying which buttons aren't functioning may help identify the problematic area of the circuit.

The climate control face should be unscrewed in order to allow access to the circuit panels. Any wiring related to the climate control system and pushbutton circuit should be inspected thoroughly for signs of disconnection, corrosion, damage and/or defection. A voltmeter should be used on different parts of the pushbutton circuit in order to pinpoint the disconnection.

Common mistakes when diagnosing the B1200 code

Components are sometimes mistakenly replaced instead of repairing faulty wiring. Replacing otherwise good components will do nothing to solve the issue.

If you purchase a new pushbutton climate control unit, you should refer to your vehicle's parts manual for the sake of reference. Make sure it fits with the specific make of your vehicle before ordering.

How serious is the B1200 code?

A B1200 trouble code won't affect the vehicle's drivability. The climate control system should be considered effectively disabled however. This may significant cause for concern if you are operating your vehicle in extreme weather conditions.

What repairs can fix the B1200 code?

Repairs for the B1200 code may include:

  • Repairing or replacing components in the climate control system
  • Repairing faulty or broken wires connected to the pushbutton circuit
  • Pushbutton replacement

Additional comments for consideration regarding the B1200 code

The B1200 trouble code is generic. This means that the specific parameters may change depending on the manufacturer and model of the vehicle in question.

Need help with a B1200 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

trouble codes
B1200
OBD-II

No more waiting rooms! Our mechanics will come to you to diagnose and fix the B1200 code.

SCHEDULE B1200 DIAGNOSTIC
Get a $20 credit for the follow-up repair

Recent Check Engine Light is on Inspection reviews

Excellent Rating

(6,180)

Rating Summary
5,718
221
51
35
155
5,718
221
51
35
155

Angelo

10 years of experience
3 reviews
Angelo
10 years of experience
Lexus RX350 - Check Engine Light is on - Nashville, Tennessee
Angelo was great!! Communicated with me really well and often, and made sure I fully understood the problem and how he fixed it. Highly recommend!!

JOHNNY

33 years of experience
73 reviews
JOHNNY
33 years of experience
Toyota Camry - Check Engine Light is on - Sacramento, California
He was very fast with his work and kept me informed about everything he did i would recomend him to a friend

Casey

19 years of experience
29 reviews
Casey
19 years of experience
Ford Fusion - Check Engine Light is on - Katy, Texas
Casey was super great, he spent a good amount of time doing a thorough investigation to make sure he diagnosed the issue with my car correctly and gave me sound advice. He also spent time explaining to me what the problem was which was much appreciated.

Matthew

33 years of experience
1001 reviews
Matthew
33 years of experience
Ford Expedition - Check Engine Light is on - Hampton, Virginia
As always, he's never late, very professional, has never went pass the estimated time, goes above and beyond and he breaks it down and explains everything so that you know exactly what he did and what needs to be done. Always satisfied with his work.


More related articles

P2040 OBD-II Trouble Code: Reductant Injection Air Pressure Sensor Circuit High Input
P2040 P2040 code definition Reductant Injection Air Pressure Sensor Circuit High Input* *Definition could differ depending on manufacturer code usage, for example, “Oil Quality Sensor ME-SFI” (Mercedes) What the P2040 code means P2040 is an OBD-II generic code for the...
P3493 OBD-II Trouble Code: Cylinder 12 Exhaust Valve Control Malfunction
P3493 means there is an issue with cylinder 12 which can cause the variable valve timing system in the vehicle to disable and poor acceleration.
P0684 OBD-II Trouble Code: Glow Plug Control Module to PCM Communication Circuit Range/Performance
P0684 code means there is a failing connection within the Glow Plug Control Module often due too corroded wires and solenoid failures.

Related questions

My truck jumps and shakes when accelerating

It is possible for problems with the ignition system to cause this issue, including spark plugs or ignition coils not firing under load. You should have a scan for trouble codes done to check for codes related to the misfiring....

Engine light is on

Hello. Diagnostic Trouble Codes (DTC's) do not necessarily identify faulty parts. For example, the Code you are inquiring about, namely, P0126 could set the Check Engine Light (CEL) simply because the coolant level in your car is too low. If...

I would like to collect brake pedal position information from my OBD2 port. Can this be done?

The brake pedal position does not have a specific wire to the OBD2 connector that can be monitored. You could however monitor the data stream and get the brake on or off PID in the data monitoring. The PID will...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com