Fault code lookup

PowertrainP0734

Caution

Severity: Caution - get it checked when you can

Gear 4 Incorrect Ratio

40 brands affected · Generic SAE J2012 description.

Key terms: SAE J2012: the standard generic code list · Powertrain: engine, transmission and emissions

1What it means in plain English

The transmission is not achieving the correct ratio in fourth gear, which usually means it is slipping in that gear.

2Common causes

  1. Low or dirty transmission fluid
  2. Worn clutch packs or brake bands
  3. Faulty shift solenoid
  4. Valve body fault
  5. Faulty speed sensor

3Can I drive?

Caution · drive with care

If the transmission slips or flares in fourth gear, stop driving and have it checked. If it feels normal, drive gently to a workshop.

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 40

BrandCodeDescriptionSystem
Ashok Leyland CVP0734Gear 4 Incorrect Ratio SAEPowertrain
BAIC MotorP0734Gear ratio-4th gear BrandPowertrain
Mercedes-BenzP0734Gear 4 Incorrect Ratio SAEPowertrain
BMWP0734EGS: Gear monitoring 4 BrandPowertrain
BYDP0734Gear 4 Incorrect Ratio BrandPowertrain
CheryP0734Gear 4 Incorrect Ratio BrandPowertrain
ChryslerP07344th gear BrandPowertrain
DaewooP0734Gear 4 Incorrect Ratio BrandPowertrain
DFFSP07344th gear ratio BrandPowertrain
DFFXP07344 Gear ratio failure BrandPowertrain
DFXKP0734Gear 4 Incorrect Ratio BrandPowertrain
EOBDP0734Käik 4 vale suhe BrandPowertrain
FiatP07344th Gear BrandPowertrain
FordP0734Gear 4 Incorrect Ratio SAEPowertrain
GeelyP0734Gear 4 Error Ratio BrandPowertrain
GMP0734Gear 4 Incorrect Ratio BrandPowertrain
Great WallP0734Gear 4 Incorrect Ratio BrandPowertrain
HafeiP0734Gear 4 Incorrect Ratio BrandPowertrain
HoldenP0734Gear 4 Incorrect Ratio SAEPowertrain
HondaP0734Gear 4 Incorrect Ratio SAEPowertrain
HyundaiP0734Gear 4 Incorrect Ratio SAEPowertrain
IsuzuP0734Gear 4 Incorrect Ratio SAEPowertrain
Land RoverP0734Gear 4 Incorrect Ratio SAEPowertrain
MahindraP07344TH GR FNCTN BrandPowertrain
MaseratiP0734Gear 4 Shift Incorrect Ratio BrandPowertrain
MazdaP0734Gear 4 Incorrect Ratio SAEPowertrain
MitsubishiP0734Gear 4 incorrect ratio BrandPowertrain
NissanP07344th gear function BrandPowertrain
OpelP0734Gear 4 Incorrect Ratio BrandPowertrain
PeugeotP0734Gear 4 Incorrect Ratio SAEPowertrain
ProtonP0734Gear 4 incorrect ratio BrandPowertrain
RenaultP07344TH GR Fnctn BrandPowertrain
SaabP0734Gear 4 Incorrect Ratio BrandPowertrain
MG (SAIC)P0734Gear Ratio Fault 4 BrandPowertrain
SprinterP0734Gear 4 Incorrect Ratio SAEPowertrain
SubaruP0734Gear 4 Incorrect Ratio BrandPowertrain
SuzukiP0734Gear 4 Incorrect Ratio BrandPowertrain
TataP0734Gear 4 Incorrect Ratio BrandPowertrain
ToyotaP07344th gear ratio BrandPowertrain
VolkswagenP0734Gear 4: Incorrect Ratio 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 2

These 7-character codes are manufacturer-specific variants of P0734 and may be reported by some scan tools.

BrandCodeDescriptionSystem
HyundaiP073400If 4th gear synchronization error is detected, PCM/TCM sets DTC BrandPowertrain
SsangYongP073400Engaged gear implausible or transmission slipping (4th gear) BrandPowertrain

6Related codes

  • P0730 Incorrect Gear Ratio
  • P0731 Gear 1 Incorrect Ratio
  • P0732 Gear 2 Incorrect Ratio
  • P0733 Gear 3 Incorrect Ratio
  • P0735 Gear 5 Incorrect Ratio
  • P0736 Reverse Incorrect Ratio
  • P0737 TCM Engine Speed Output Circuit
  • P0738 TCM Engine Speed Output Circuit Low
  • P0739 TCM Engine Speed Output Circuit High
  • P073A Right rear blower motor failure
  • P073B Rear or left rear air supply motor failure
  • P073C Stuck in gear 7

Browse Pxxx codes or P073xx codes.

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