P0826 low

Up and Down Shift Switch Circuit

The P0826 code means the vehicle's onboard diagnostic system has detected: Up and Down Shift Switch Circuit. This is a low severity code.

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Keep driving?: Yes, but fix soon
DIY difficulty: moderate
Estimated cost: $75 - $400 (parts and labor)

Check Your Fluid First

ANCEL AD310 OBD-II Scanner

Read and clear transmission codes. Many trans codes are caused by low or burnt fluid -- check level and color before assuming the worst.

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Read Transmission Codes

LAUNCH CRP123X (Reads All Systems)

Basic scanners only read engine codes. This reads transmission, ABS, and airbag too.

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Common Symptoms

Check Engine Light illuminated
Manual up and down shift switches do not function
Unable to use tiptronic or manual shift mode
Transmission operates in automatic mode only

Probable Causes (Ranked by Likelihood)

Faulty up/down shift switch assembly Very High
Wiring issue in shift switch circuit High
Corroded connector at shift switch Moderate
TCM input failure for shift switch signals Low

Step-by-Step Diagnostic Procedure

Use a scan tool to verify shift switch inputs while pressing up and down
Inspect the shift switch connector for corrosion or loose pins
Test switch continuity with a multimeter
Check for power and ground at the switch connector

Frequently Asked Questions

Is P0826 different from P0815 and P0816?

P0815 and P0816 are specific to individual upshift and downshift circuits. P0826 indicates a general fault affecting the combined up/down shift switch circuit.

Can I still use my car without manual shift mode?

Yes, the automatic transmission will shift normally on its own. Manual shift mode is a convenience feature.

Where is the shift switch located?

Depending on the vehicle, the shift switch may be on the gear lever, on the steering wheel as paddle shifters, or both. Check your vehicle manual for the specific location.