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Fix Error Code

What does your error code mean?

Car trouble codes and appliance error codes explained: severity, likely causes, step-by-step fixes and what a repair usually costs.

Tip: spaces, colons and dots are ignored — “E:24”, “e24” and “E 24” all work.

Car / OBD-IICheck engine light on? Decode P, B, C and U codes.648 codes Home AppliancesDishwashers, washers, dryers, fridges, ovens and more.180 codes

Most viewed codes

P0420 Powertrain The bank 1 catalytic converter no longer stores enough oxygen to clean the exhaust properly. Low B0001 Body The airbag module found a fault in the firing circuit for the driver's front airbag (stage 1). High U4 Daikin · Air Conditioner / Heat Pump The indoor unit has lost its data link with the outdoor unit, so the system can't cool or heat. Moderate C0035 Chassis The ABS module lost a valid signal from the driver-side front wheel speed sensor. Moderate E6 Mitsubishi Electric · Air Conditioner / Heat Pump The indoor unit isn't getting valid signals back from the outdoor unit over the S3 wire. Moderate P0101 Powertrain The MAF sensor's airflow reading doesn't match what the engine computer expects… Low E15 Bosch · Dishwasher Water reached the base pan under the tub and the Bosch leak protection shut the cycle down. Moderate P0113 Powertrain The intake air temperature signal is stuck at maximum voltage, which usually means an open… Low

Latest error codes

All Powertrain Network Chassis Body Dishwasher Washing Machine Dryer Refrigerator / Freezer Oven / Range Microwave Air Conditioner / Heat Pump Water Heater / Boiler
B0001 Body The airbag module found a fault in the firing circuit for the driver's front airbag (stage 1). High U4 Daikin · Air Conditioner / Heat Pump The indoor unit has lost its data link with the outdoor unit, so the system can't cool or heat. Moderate C0035 Chassis The ABS module lost a valid signal from the driver-side front wheel speed sensor. Moderate E6 Mitsubishi Electric · Air Conditioner / Heat Pump The indoor unit isn't getting valid signals back from the outdoor unit over the S3 wire. Moderate P0101 Powertrain The MAF sensor's airflow reading doesn't match what the engine computer expects… Low E15 Bosch · Dishwasher Water reached the base pan under the tub and the Bosch leak protection shut the cycle down. Moderate P0113 Powertrain The intake air temperature signal is stuck at maximum voltage, which usually means an open… Low E24 Bosch · Dishwasher Your Bosch couldn't pump the water out in time. Most often a clogged filter or a blocked drain… Low P0128 Powertrain The engine takes too long to warm up, which almost always points to a thermostat stuck open. Low E25 Bosch · Dishwasher Something is jamming the Bosch drain pump, or the pump cover under the filter isn't seated.… Low P0135 Powertrain The heater inside the upstream oxygen sensor on bank 1 isn't working or its circuit is faulty. Low AE LG · Dishwasher Water collected in the LG base pan and lifted the leak float. Find the leak before restarting. Moderate P0171 Powertrain The engine computer is adding the maximum extra fuel it's allowed on bank 1 and still sees… Moderate OE LG · Dishwasher Your LG couldn't pump the water out. Clean the multi filter and check the hose and disposal… Low P0172 Powertrain The engine computer is pulling as much fuel as it's allowed on bank 1 and the mixture is still… Moderate F11 Miele · Dishwasher Your Miele couldn't drain the tub. Check the filter combination, non-return valve and drain… Low P0174 Powertrain The cylinder bank without cylinder 1 is running lean even with the maximum fuel correction… Moderate 5C Samsung · Dishwasher Your Samsung dishwasher couldn't drain. Usually a clogged filter, the disposal or a kinked… Low P0299 Powertrain The turbo or supercharger isn't building the boost pressure the engine computer is asking for. Moderate LC Samsung · Dishwasher The leak sensor under the tub got wet, so the Samsung stopped filling and ended the cycle. Moderate P0300 Powertrain The engine computer sees misfires that jump between cylinders or hit several cylinders at once. High D80 LG · Dryer LG Flow Sense detected restricted airflow in the vent. The dryer still runs, but lint buildup… Moderate P0301 Powertrain Cylinder 1 is repeatedly failing to fire. The cause is almost always its coil, plug, injector… Moderate HE Samsung · Dryer The Samsung dryer isn’t heating as expected – often no heat at all. Check power, gas supply… Moderate

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Vehicle brands

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Appliance brands

WhirlpoolSamsungLGGE AppliancesFrigidaireBoschMaytagSpeed QueenKitchenAidElectroluxMieleDaikinMitsubishi ElectricCarrierNavienRinnaiRheemA. O. SmithTraneLennoxGoodmanMRCOOLFujitsuGreeMideaPanasonic

Start from a symptom

Check engine light on 558 Loss of power 214 Rough idle 184 Limp mode 165 Poor fuel economy 146 Engine stalling 133 Car won't start 123 Harsh or slipping shifts 80 Not heating 71 ABS / traction light on 65 Won't start a program 55 Not cooling 41 Fuel smell 34 Check engine light flashing 22 Leaking water 17 Not draining 16 Not filling with water 14 Door won't lock or open 13 No heat or hot water 11 Not spinning 9 Low system pressure 1

How to read an error code

P0420P10243204

How to read an OBD-II code

Take P0301 as an example. The letter names the system: P powertrain, B body, C chassis, U network. The first digit shows whether the code is generic (0) or manufacturer-specific (1), the next digit points to the sub-system – 3 means ignition and misfire – and the last two digits identify the fault, here cylinder 1.

Generic vs. manufacturer-specific codes

Generic codes such as P0420 are defined by SAE J2012 and mean the same thing on every OBD-II vehicle. Manufacturer-specific codes, such as those starting with P1, are defined by each carmaker and can mean different things on different brands. Always look them up for your make, and note that a basic code reader may not show every manufacturer code.

Check engine light: steady or flashing?

A steady light means a fault has been stored – you can usually keep driving, but have the code read soon and check the gas cap first. A flashing light signals an active misfire that can overheat and damage the catalytic converter. Reduce speed and load right away and get the car checked as soon as possible.

How appliance error codes work

Appliances with a display show a code such as E24 or F21; models without a display signal faults by blinking LEDs, where the number of flashes or the pattern of lit lamps is the code. The same code can mean completely different faults on different brands, and sometimes across a brand's model families. Always match the code to your brand and model before acting.