P0377
Timing Reference High Resolution Signal B Too Few Pulses
Severity
🔴 HighCan you drive?
Do not drive — repair immediately
Approx. repair cost
$22–167 (est.)
Symptoms
- Unstable idle with periodic dips
- Misfires
- Jerks and dips during acceleration
- Increased fuel consumption
- Check Engine Light Is On
Causes
- Damaged or chipped teeth on sensor B drive
- Sensor clogged with metal shavings
- Unstable contact in the sensor connector
- Worn sensor with unstable signal
- Damage to the shielding sheath of the signal wire (crosstalk)
How to Fix
- Read codes, check for misfire codes P030x
- Inspect the drive disc through the inspection window or after removing the cover
- Clean the sensor from metal shavings, check the gap
- Inspect and clean sensor connector B
- Check signal wire shielding
- Replace a damaged drive disk or sensor
Related codes
Error P0377 by Vehicle Brand
AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye