Bosch SA NL Code: What Service Appliance No Light Means

Quick Answer

SA NL on a Bosch dishwasher display stands for Service Appliance, No Light. It is not a standard error code - it means the dishwasher has entered a service or technician diagnostic state, usually by accidentally pressing the right button combination. The fix is usually to exit service mode, which requires a specific button sequence.

BoschDishwasherSeverity: moderateDifficulty: intermediate85% DIY Success

Time to Fix

5–60 min

Difficulty

intermediate

Parts Cost

$80 – $160

Tools Needed

None for basic exit attempt

Wrong code?

Not seeing SA NL on your display?

Select what your appliance is actually doing and we'll take you to the right guide.

accessing diagnostic test program

DIAG

board communication failure

E92

clearing error codes and resetting cycle

HUB

control panel unresponsive

HUB

What Does the SA NL Code Mean?

Bosch dishwashers have a technician service mode that can be accidentally triggered by holding certain button combinations. Once in service mode, the display shows SA NL and the dishwasher will not run normal cycles. Most owners have never seen SA NL before and understandably panic. The good news: if SA NL was triggered by button presses (rather than hardware failure), it clears with the correct exit sequence and the dishwasher will operate normally immediately afterward.

Most Likely Causes

Based on aggregated repair data, here is the probability breakdown for this error code:

Dishwasher accidentally entered service mode via button combination40%

Technician left dishwasher in service mode after a repair36%

Display module failure causing garbled text showing as SA NL24%

Symptoms You May Notice

SA NL showing on display instead of cycle options
Dishwasher will not run any cycle
Buttons respond differently than normal
Display flickers and shows SA NL intermittently

Can you reset a Bosch dishwasher to clear the SA NL code?

Turn off the circuit breaker for 60 seconds. This is the most reliable way to exit service mode.

Tools Required for Diagnosis

None for basic exit attempt

Diagnostic Checklist

Follow these steps in order. We start with the easiest external fixes before opening up the machine.

Exit service mode via power cycling

Turn off the circuit breaker for 60 seconds. Turn it back on. If SA NL was triggered by a button combination, a full power cycle will typically exit service mode and return the dishwasher to normal operation. Try pressing Start after power is restored.

Exit service mode via button sequence

Test if the display module has failed

Replacement Parts

If your diagnostic testing proves the component has failed, you will need a replacement. We recommend OEM parts over aftermarket for water-handling components.

Part Name	OEM Number	Estimated Price
Display Module / UI Board00708399 · $80–$160	00708399	$80 – $160

Verify part fitment for your Bosch model

Repair vs. Replace Calculator

Appliance Age (Years)7 Yrs

Labor Approach

Our Verdict

REPAIR

Estimated Cost: $120 (Parts) vs $650 (New Machine)

Frequently Asked Questions

How do I exit SA NL mode?

The fastest method is a circuit breaker reset: turn off the breaker for 60 seconds, then turn it back on. For most Bosch models this fully exits service mode. If SA NL returns after that, try holding the Cancel/Drain button for 5-8 seconds. If neither method works, the display module may have failed and is showing garbled text rather than a true service mode activation.

What buttons trigger service mode on a Bosch?

The exact combination varies by model series. On most 500 and 800 series models, holding the two leftmost buttons simultaneously for 5+ seconds enters service or diagnostic mode. On older SHE-series models, a 3-button press sequence is used. The combination is intentionally obscure to prevent accidental activation, but children or someone cleaning the panel can stumble into it.

SA NL and dishwasher will not run - is it broken?

Not necessarily. SA NL in service mode prevents normal cycle operation because the dishwasher is waiting for technician input rather than user commands. Exit service mode using the circuit breaker reset and try starting a normal cycle. In the vast majority of SA NL cases, the dishwasher works perfectly once service mode is exited.

Is SA NL a real error code?

No. SA NL is not a component fault code like E15 or E24. It stands for Service Appliance, No Light and indicates the dishwasher has entered a technician service state. It does not indicate a broken part. The only exception is if SA NL is actually a display malfunction showing garbled characters - in that case, the underlying display module may need replacement, but the dishwasher itself is mechanically fine.

SA NL appeared after a power outage - is that possible?

It is uncommon but possible. In rare cases a power restoration surge can cause the control board to boot into service mode rather than normal operation mode. A circuit breaker reset (power completely off for 60 seconds, then restored) will clear this in most cases. If SA NL keeps reappearing after power events, consider adding a surge protector to the dishwasher outlet.

Related Bosch Dishwasher Error Codes

Code: DIAGHow to Enter Bosch Dishwasher Diagnostic Mode Code: E92Bosch E92 Error: Control Board Communication Fix Code: HUBHow to Reset a Bosch Dishwasher Code: HUBBosch Dishwasher Buttons Not Working

Same Fix Works on These Brands

Bosch shares the same hardware platform with these brands. The diagnosis and repair steps are identical.

Bosch dishwasherBosch Dishwasher E15: Fix the Anti-Flood Alert Fast Bosch dishwasherBosch Dishwasher Error Codes: Complete List + Fixes Bosch dishwasherHow to Reset a Bosch Dishwasher (Every Method)Bosch dishwasherBosch E24 Error: Drain Problem Solved Step by Step Bosch dishwasherBosch E25 Code: Drain Pump Fix Without a Technician Bosch dishwasherBosch Dishwasher Not Draining: Every Cause Covered

Models Known to Experience SA NL Errors

This repair applies to most Bosch dishwashers with this error code. Common model numbers include:

SHPM88Z75N, SHPM88Z55N, SHPK7ZL55N, SHE3AR75UC, SHEM63W55N, SHPM65Z55N, SHE3AR72UC, SHDF78Z55N, SHEM78ZH5N, SHPM98Z75N

Last verified for technical accuracy on March 14, 2026