Bosch HDI8056U 800 Series 30 in Induction Slide-In Range Er5 Error Fix: Induction Coil / Zone Fault

Error code Er5 on the Bosch HDI8056U 800 Series 30 in Induction Slide-In Range means: Induction Coil / Zone Fault. An induction heating zone has an electrical fault. The coil driver circuit, relay, or the induction coil itself may have failed. The affected zone will not heat. Try using a different cooking zone to isolate the problem. If only one zone is affected, the issue is likely the zone-specific components (induction coil, relay, or driver circuit). If multiple zones are affected, the main power board may be faulty. This requires professional service — induction systems operate at dangerous voltage and frequency levels internally.

The most successful fix is "Replace Induction Coil or Zone Relay Assembly" (hard difficulty, ~90 minutes). This fix costs nothing. HomeMD has 2 community-ranked fixes for this error.

This error is rated high severity. You should address it promptly — continued use could cause damage or safety concerns.

Yes — the top-ranked community fix ("Replace Induction Coil or Zone Relay Assembly") is rated hard difficulty and takes about 90 minutes. Tools needed: Multimeter, T20 Torx screwdriver, Voltage tester, Insulated pliers.

DIY cost: $0. Professional repair typically costs $250-$400. Many homeowners save money by trying the top-ranked community fix first.

The Bosch HDI8056U 800 Series 30 in Induction Slide-In Range has 8 other known error codes, including: E011 (Oven Temperature Sensor Open), E012 (Oven Temperature Sensor Shorted), E013 (Oven Maximum Temperature Exceeded), E015 (Door Lock Fault — Self-Clean), E016 (Door Lock Timeout), and 3 more.

Error code Er5 also appears on 2 other Bosch models: HII8056U 800 Series 30 in Induction Range with Home Connect, HIS8655U 800 Series 36 in Induction Cooktop. The fix may vary by model, so check each model's specific page for tailored repair steps.