Suzuki Baleno P1629 Engine Trouble Code
What is Suzuki Baleno P1629?
The Suzuki Baleno P1629 check-engine light can indicate issues ranging from minor (loose gas cap) to serious (catalytic converter failure). Professional diagnostic scanning at a dealer or shop will identify the exact cause and required repairs.
P1629 on the Suzuki Baleno
Independent workshop data shows that Suzuki Baleno vehicles with P1629 resolve approximately 40% of cases after a throttle body cleaning and idle relearn procedure. This is always the recommended first step before investing in new sensors.
Code Information
| Code Type: | OBD-II Powertrain (P) Trouble Code |
| System: | Powertrain |
| Vehicle: | Suzuki Baleno |
| Brand: | Suzuki |
| Model: | Baleno |
| Code: | P1629 |
P1629 Suzuki Baleno Symptoms
Check Engine Light
Illuminated Suzuki Baleno dashboard warning
Engine Stalling
Engine stops unexpectedly or misfires
Performance Issues
Reduced power or acceleration on the Suzuki Baleno
Starting Problems
Difficulty starting the engine
Poor Fuel Economy
Increased fuel consumption on the Suzuki Baleno
Increased Emissions
Failed emissions test due to P1629
P1629 Code Structure
Understanding what each digit means in the P1629 powertrain trouble code:
| P | 1 | 6 | 2 | 9 |
|---|---|---|---|---|
| Powertrain Code | Fuel And Air Metering | Fuel Temperature Sensor B Circuit Range/Performance | Turbocharger Boost Sensor A Circuit Low | Reverse Input Circuit |
How to Fix Suzuki Baleno P1629
Diagnostic Steps:
Check if fuel pump primes when key is turned to ON. Measure fuel pressure and verify bright white-blue spark at all plugs. Also verify mechanical timing alignment.
Repair Solution:
Power steering pressure switch monitors system operation. If pressure changes are not detected after calibrated speed transitions, this DTC sets. Verify PSP switch operation and check for circuit opens or shorts.
Technical Notes:
P1629 DTCs can be triggered by upstream issues. For example, a dirty MAF sensor may cause incorrect fuel-trim adjustments, leading oxygen sensors to report mixture problems. Address root causes first.
Suzuki Baleno P1629 Repair Cost
Intercooler hose replacement on turbocharged Suzuki Baleno models costs $120–$250 per section. A boost-leak smoke test ($50–$80) is the definitive diagnostic method and will pinpoint exactly which hose or connection is at fault before any parts are ordered.
P1629 Description
P1629 engine trouble code is related to Reverse Input Circuit.
Main Cause
The primary reason for P1629 OBD-II Engine Trouble Code is: Fuel Temperature Sensor B Circuit Range/Performance.
Common P1629 Misdiagnosis on the Suzuki Baleno
On Suzuki Baleno vehicles, the turbo boost solenoid and the MAP sensor feed into the same diagnostic path. P1629 caused by a faulty boost solenoid is sometimes charged to the customer as a MAP sensor replacement, doubling unnecessary parts spend.
DIY Repair Guide: P1629 on Suzuki Baleno
After any repair that involved disconnecting the battery on the Suzuki Baleno, the power window, steering angle sensor, and transmission adaptive values all require a reset drive cycle. Skipping this can cause false fault codes — including P1629 — for the first two to three start cycles.
Preventing P1629 on the Suzuki Baleno
After any fuel system repair on the Suzuki Baleno, always perform a fuel-trim reset and adaptation drive. Skipping this step leaves the ECU operating on pre-repair learned values, which can generate false P1629 alerts for weeks after the fix.
Frequently Asked Questions — Suzuki Baleno P1629
A: It depends on the severity. If the check-engine light is steady, it is generally safe to drive to a workshop within the next few days. If the light is flashing, pull over safely as soon as possible — a flashing light indicates an active misfire that can cause expensive catalytic converter damage within minutes.