Fault code lookup

PowertrainP0343

Serious

Severity: Serious - have it checked soon

Camshaft Position Sensor A Circuit High Input (Bank 1)

37 brands affected · Generic SAE J2012 description.

Key terms: Catalytic converter: cleans the exhaust gases · Bank 1: the side of the engine containing cylinder 1 · SAE J2012: the standard generic code list · Powertrain: engine, transmission and emissions

1What it means in plain English

This range covers ignition and engine-speed signals, including misfires and crankshaft or camshaft position sensors.

2Common causes

  1. Worn or fouled spark plug
  2. Faulty ignition coil
  3. Vacuum or intake air leak
  4. Low fuel pressure
  5. Faulty crankshaft or camshaft position sensor
  6. Low engine compression

3Can I drive?

Serious · drive with care

A failing crankshaft or camshaft sensor can cut the engine without warning, and a flashing check-engine light points to a misfire that can damage the catalytic converter. If the light is flashing, stop as soon as it is safe and have the car towed. Otherwise drive gently to a workshop; if it stalls or will not restart, have it towed.

This page gives general information. It is not professional advice. For a definite diagnosis and a repair quote, ask a qualified mechanic to inspect the car.

4Brand data 37

BrandCodeDescriptionSystem
Ashok Leyland CVP0343Camshaft Position Sensor A Circuit High Input (Bank 1) SAEPowertrain
BAIC MotorP0343Phase Sensor Circuit High Voltage BrandPowertrain
Mercedes-BenzP0343Camshaft Position Sensor A Circuit High Input (Bank 1) SAEPowertrain
BMWP0343Short circuit to positive BrandPowertrain
BYDP0343Camshaft sensor voltage high BrandPowertrain
CheryP0343CAM sensor signal high BrandPowertrain
DaewooP0343Camshaft Position Sensor Circuit High Voltage BrandPowertrain
DaihatsuP0343Intake cam angle sensor system BrandPowertrain
DFFSP0343Intake cylinder phase sensor signal failure BrandPowertrain
DFFXP0343phase sensor maximum fault BrandPowertrain
DFXKP0343Phase Sensor Signal CKT Short To Power BrandPowertrain
EOBDP0343Nokkenaspositiesensor 'A' circuit hoog bank 1 of enkele sensor BrandPowertrain
FordP0343Camshaft Position Sensor A Circuit High Input (Bank 1) SAEPowertrain
GeelyP0343Phase sensor short to ground BrandPowertrain
GMP0343Camshaft position (CMP) sensor circuit high voltage BrandPowertrain
Great WallP0343CAM sensor signal high BrandPowertrain
HafeiP0343Camshaft Position Sensor A Circuit High Bank 1 or Single Sensor BrandPowertrain
HoldenP0343Camshaft Position Sensor Circuit High Voltage BrandPowertrain
HondaP0343Camshaft Position Sensor A Circuit High Input (Bank 1) SAEPowertrain
HyundaiP0343Camshaft Position Sensor A Circuit High Input (Bank 1) SAEPowertrain
IsuzuP0343Camshaft Position Sensor A Circuit High Input (Bank 1) SAEPowertrain
Land RoverP0343Camshaft position sensor circuit - high input BrandPowertrain
MaseratiP0343Camshaft position sensor circuit high (bank 1 sensor 1) BrandPowertrain
MazdaP0343Camshaft Position Sensor A Circuit High Input (Bank 1) SAEPowertrain
MitsubishiP0343Camshaft position sensor BrandPowertrain
OpelP0343Camshaft position (CMP) sensor circuit high voltage BrandPowertrain
PeroduaP0343Intake cam angle sensor system BrandPowertrain
PeugeotP0343Camshaft Position Sensor A Circuit High Input (Bank 1) SAEPowertrain
PorscheP0343Camshaft Position Sensor A Circuit High Input (Bank 1) SAEPowertrain
ProtonP0343Camshaft position sensor BrandPowertrain
SaabP0343Camshaft Position (CMP) Sensor Circuit High Voltage BrandPowertrain
MG (SAIC)P0343Intake Camshaft Position Sensor Circuit Short to Battery BrandPowertrain
SmartP0343Camshaft Position Sensor A Circuit High Input (Bank 1) SAEPowertrain
SuzukiP0343Camshaft Position Sensor 'A' Circuit High (Bank 1 or Single Sensor) BrandPowertrain
TataP0343Camshaft Position Sensor Circuit High Input BrandPowertrain
ToyotaP0343Camshaft position sensor A circuit short to power supply BrandPowertrain
VolkswagenP0343Camshaft Position Sensor (G40): Signal too High BrandPowertrain

Legend: SAE is the generic J2012 description; Brand is text taken from that manufacturer’s data. Manufacturer rows keep the wording and language of the source data, and non-English text is tagged so screen readers pronounce it correctly.

5Extended variant codes 1

These 7-character codes are manufacturer-specific variants of P0343 and may be reported by some scan tools.

BrandCodeDescriptionSystem
VolvoP034315Diagnostic trouble code (DTC) ECM- is for the camshaft position (CMP) sensor, intake BrandPowertrain

6Related codes

  • P0340 Camshaft Position Sensor A Circuit (Bank 1)
  • P0341 Camshaft Position Sensor A Circuit Range/Performance (Bank 1)
  • P0342 Camshaft Position Sensor A Circuit Low Input (Bank 1)
  • P0344 Camshaft Position Sensor A Circuit Intermittent (Bank 1)
  • P0345 Camshaft Position Sensor A Circuit (Bank 2)
  • P0346 Camshaft Position Sensor A Circuit Range/Performance (Bank 2)
  • P0347 Camshaft Position Sensor A Circuit Low Input (Bank 2)
  • P0348 Camshaft Position Sensor A Circuit High Input (Bank 2)
  • P0349 Camshaft Position Sensor A Circuit Intermittent (Bank 2)
  • P034A DTC P0335-3A Crankshaft Position Sensor A Circuit
  • P034B %str_ _xxxx
  • P034C Injector Supply Voltage. Group 6. Low Signal

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