P1835
Kick-Down Switch.
- Chevrolet
- Powertrain
- Manufacturer code
- Low severity
How this code is built
- P
- SystemPowertrain
- 1
- Defined byThe manufacturer
- 8
- AreaTransmission
- 35
- FaultThe specific fault in that area
What it means
On Chevrolet, P1835 relates to the kick-down switch circuit. The kick-down switch is a switch at the accelerator pedal or throttle that tells the control unit when the driver has pressed the pedal to the floor and wants a forced downshift. The control unit set the code because the switch signal was implausible, stuck, or out of range compared with throttle position or other inputs. The exact switch location and test values depend on the model, engine and transmission.
Symptoms
- Transmission does not downshift when the pedal is pressed fully down
- Unexpected or constant forced downshifts, or the gearbox hunting between gears
- Poor or inconsistent overtaking response
- Harsh or delayed shifts
- Check engine light or transmission warning light on
Possible causes
- Faulty or misadjusted kick-down switch at the pedal or throttle linkagelikely
- Damaged wiring, chafing or a short or open circuit in the switch harnesslikely
- Corroded, loose or contaminated connector at the switch or control unitpossible
- Throttle position or pedal position sensor fault giving a signal that disagrees with the switchpossible
- Poor power or earth supply to the switch circuitpossible
- Fault inside the transmission or engine control unitrare
How to diagnose
- Read all stored codes and freeze frame data, and note whether other throttle, pedal or transmission codes are present
- Check for technical service information for your model, as switch type and location vary
- Inspect the switch, its mounting and the pedal or throttle linkage for damage, wear or incorrect adjustment
- Inspect the wiring and connectors for chafing, corrosion, water ingress and pin tension
- Watch the switch state in live data while pressing and releasing the pedal, and check it changes at the right point
- Test the switch with a multimeter for continuity and correct operation as per the manufacturer's procedure
- Check the supply voltage and earth at the switch, and test the wiring for shorts and open circuits
- Compare throttle or pedal position sensor readings against the switch signal to rule out a sensor fault
How to fix
- Adjust or replace the kick-down switch
- Repair or replace damaged wiring and clean or replace faulty connectors
- Replace a faulty throttle or pedal position sensor if it is found to disagree with the switch
- Restore a poor power or earth supply to the circuit
- Repair or replace the control unit only after all wiring and component faults are ruled out, following manufacturer procedure
Can I keep driving?
The car is usually safe to drive, but kick-down and shift quality may be affected, so allow extra room when overtaking and book a repair soon. If the gearbox shifts harshly or behaves erratically, have it checked promptly.
Guide written by AI from the code's definition. Confirm with a diagnosis before replacing parts.
This code for other makes
- P1835BuickKick-Down Switch
- P1835CadillacKick-Down Switch
- P1835GMKick-Down Switch
- P1835GMCKick-Down Switch
- P1835OldsmobileKick-Down Switch
- P1835OtherTransmission Transfer Case Differential Lock-Up Solenoid Short Circuit To Ground
- P1835SaturnKick-Down Switch
- P1835VolkswagenPressure Control Solenoid 5 Short To B+